week. you're live in the cnn "newsroo "newsroom." >> good morning. i'm carol costello. thanks for joining me. day 35. the search area shrinks, but a sobering reality settles in. it may not shrink anymore. five weeks and the batteries on the flight's so-called black boxes are dead or dieing. still this morning's upbeat assessment is encouraging. >> we have very much narrowed down the search area and we are very confident that the signals that we are detecting are from the black box on mh370. we're now getting to the stage where the signal from what we are very confident is the black box is starting to fade and we are hoping to get as much information as we can before the signal finally expires. >> cnn's matthew chance is at the heart of the search in perth, australia. good morning, matthew. >> reporter: good morning, carol. that's right. the search is continuing. remember it's a 24-hour search now. even though darkness has fallen here in perth and in the area a thousand miles off the coast of perth, as the search operation is continuing, we're trying to determine more pings off the water. optimism was briefly raised despite the fact there's been no breakthrough reported by the mission, the search organizers in western australia. optimism briefly raised by comments by prime minister tony abbott. he's on an official tour of china where the majority of the victims of the missing airliner came from. he went a little further than any other australian official had gone by basically saying they've limited the search area down to a few kilometers and said he was confident the signals they were detecting were from the black box flight recorders. nobody has gone that farment within a few minutes afterwards, the head of the search operation, angus houston has been saying there's been no actual breakthrough since last time we spoke in the past 24 hours. it was merely the prime minister summarizing his characterization of that on going search, carol. >> matthew chance reporting live from australia. as mathew said, australia's prime minister briefed china's president on the flight for 370 as the two men met today in beijing. sky news reporter brook court joins us live from the chinese capital. brook, tell us about this meeti meeting. brook, are you there? >> we don't have brook. basically the australian prime minister briefed the families of those missing aboard flight 370. he told us the latest information and we'll transcribing to get back to brooke in just minute. >> let's bring in rob mccallum who helped in the search for air france flight 447 and david funk, a retired pilot for northwest airlines. welcome to both of you. >> good morning. >> good morning. >> australia's prime minister says they very much narrowed down the search area to within a few miles. i'm a little confused about that. seriously? have they narrowed it that much. >> the prime minister is privy to a lot more information than i am. that does sound a trifle overconfident. we're moving now into a world that's incredibly dark. working on a slope, working at incredible depths. we still have a little ways to go. he has room for confidence, but not exact confidence. >> room for confidence. the entire search area still the size of -- maybe a little smaller than new mexico now. then the prime minister seemed to intimate that the search area for the black boxes themselves is much smaller than that. is that what he meant, rob? >> he's saying -- he's implying that the pinger location is an area of high probability within the overall search area. again, we're not dealing in an exact environment. when you're dealing with acoustics or sound under water, sound can bend, it can bounce, it can be inflinsed by a lot of factors. until you actually have eyes on the wreckage, you can't be completely confident. >> david, let me ask you this, because those searchers searching by air, they were pretty pumped up by the australian prime minister's comment. >> they should be. the fact that we've got it narrowed down, to maybe say the state of massachusetts, instead of new mexico, that's a lot smaller area for us to look at. frankly, with the screwed-up information we continue to get from the malaysians and knowing the gio politics from that part of the world, some of the talks about the wide turns and the tracks and the altitude, how much of that information coming from the malaysians, they kind of want to tell us what's going on but are afraid to reveal to their neighbors what their true capabilities of the radars are. i'm far more interested in hearing what we're getting from the pingers. it's going to be a very, long hard slog to get to it. we'll get the black boxes and have a much better idea what happened to this aircraft and why it ended up in the indian ocean. >> rob, the reason there's so much optimism is because four separate times searchers picked up these pings that they're sure, fairly sure are coming from the black boxes. but there was a fifth ping they said they picked up by sonar buoy that proved to be a false lead. so should they not do that anymore, drop buoys from airplanes with the sound detectors on them? should they not use them anymore? >> to be honest, at this stage with the batteries dieing out, almost everything is worth a shot, to try and get another fix or two. any noise detection at all on those pingers. the fifth ping was a distraction, but we've got four good pings and that gives us a much better idea of where to deploy side scan sonar than we had a week ago. >> david, you're a pilot, of course. there's a theory out there this maybe the perfect crime, someone flew the plane to the middle of the indian ocean to make it disappear. is there any way to obscure the information recorded on those black boxes? >> other than the fact that the cockpit voice recorder only goes back two hours and the plane flew much longer and we'll only know what happened the last two, no way at all from the flight deck or inside the airplane that i'm aware of or anyone in the business has ever said you can modify what's on that flight data recorder. there are thousands of bits of information that goes back more than 30 days -- goes back at least 30 days. we're going to have a lot of info once we pull those things out, positions of flight controls, the temperatures the engines were producing, amount of fuel flow. there's a huge amount of data there. once we get them up off the bottom. getting off the bottom is rob's area of expertise. it's a very difficult environment as we all understand. >> once they pinpoint where those black boxes are exactly or come close at least, rob, it's still going to take months, maybe years to actually find the physical boxes, right? >> that's right. once we move to side scan sewn nor mode -- it's detected by autonomous under water vehicle or a sled towed behind a ship. with an auv you might be searching 30 square miles a day, with a towed sled, maybe 120 miles per day. it's a slow and painstaking business. once we find the debris field, then and only then can we operate the remote operated vehicles to go down with lights and cameras andaman into late around to explore the wreckage to recover the black boxes. >> rob mccallum, david funk, thanks for your insight as always. >> great to see you. >> thank you. still to come, a desperate search to find the black boxes. if and when they are found, you heard little bit about it, but we'll go into it more. how will the teams retrieve the black boxes? we'll be right back. co: sometimes you don't know you need a hotel room until you're sure you do. bartender: thanks, captain obvious. co: which is why i put the hotels.com mobile app on my mobile phone. anyone need a coupon? i don't. bob will retire when he's 153, which would be fine if bob were a vampire. but he's not. ♪ he's an architect with two kids and a mortgage. luckily, he found someone who gave him a fresh perspective on his portfolio. and with some planning and effort, hopefully bob can retire at a more appropriate age. it's not rocket science. it's just common sense. from td ameritrade. it's just common sense. a car that is able to see, to calculate, to think, and can respond to what it encounters. even if that means completely stopping itself. it's the stuff of science fiction... minus the fiction. the 2014 e-class. see your authorized dealer for exceptional offers through mercedes-benz financial services. mr. clean likes to keep things simple. that's why he brings his magic eraser extra power. it quickly cleans hundreds of different surfaces. so you can get back to doing what you really want. the magic eraser extra power. ♪ 35 days since the disappearance of flight 370. officials are rushing to find the black boxes before the signals go silent. they also have to retrieve them from ocean waters nearly three miles deep. george howe has more on how they can do it. >> reporter: once you find the needle in the hey stack, how do you extract it? that's what investigators are up against as they try to hone in on the black boxes. >> season operators found the needle before they found the hey stack. it's quite unprecedented. >> reporter: once you know where to look, how do you get down there, some 14,000 feet below the indian ocean? >> there's one of two ways you do it. you either do it with a remote vehicle that is not tether ed t a ship on the top or you do it with a tethered remote vehicle. >> reporter: former managing director of the national transportation safety board says similar types of vehicles went almost 13,000 feet deep during the search for the cockpit voice and data recorders from the 2009 air france crash off the coast of brazil. the recorders were found about two years after the crash, long after the pingers had died. under water vehicles were also used to create artifacts from the titanic. before sending the vehicles down, investigators must first map the terrain. a step that takes time and requires patience. >> if it's in rocky or cav very nous terrain, it could be challenging. once the wreckage is identified, these vehicles and the operators have extraordinary capability. >> locating them is one thing, but pulling the black boxes from the incredible depths is another. the remote controlled vehicles, armed with sonar, cameras, lighting and remote control arms may sift through silt and potentially through wreckage in pitch dark waters. >> it can be painstaking. it can be very difficult. sometimes the boxes have separated from the wreckage. sometimes the boxes have separated from their pingers. so this is going to being a long process. >> george howell, cnn, chicago. joining me now, less aben, a pilot for 777s. good morning, les. >> good morning, carol. how are you? >> you've been with us for these 35 days. are you still hopeful? >> i've always looked at this with rose-colored glasses. the prime minister is being optimistic. i like to hear from marshall houston covering this operation more than anything because he's very guarded with what he says. i think the information is a little bit more technical and accurate. yeah, i'm very hopeful. this is great news. >> i'm going to jump way far ahead and ask you this question. once they find those black boxes and bring them up to the surface, how long does it take to retrieve information from them? >> it depends on where they go. i'm thinking they'll send it to the ntsb headquarters in washington, although i don't know that for a fact. but this data can be disseminated probably in a week's time or less from what i know. it's a process. once that process starts occurring, you can put in a program that will actually show what the airplane was doing, both from a profile point of view and from within the cockpit. so it will be exciting stuff. in addition, the fact that you recover black boxes, you can recover part of the wreckage with it which might mean you'll find the tail depending on how the airplane impacted. that will tell us a lot, too, just by finding wreckage. >> obviously these black boxes are critical to solving this mystery. is there any way to tamper with this black box while the plane was in the air or on the ground or is it impossible? >> your brooef yous guest today, buck, indicated it really is. there's nothing you can do with the digital flight data recorder. there's no way of tampering with that. the only way you can do anything is to pull a circuit breaker. that's not accessible to us in the cockpit in the 777. there's no way you can possibly erase data, move data. it's not something we as pilots have the capability of doing. >> so i'll ask the big question. from your observations these many days, what do you think happened? >> that's the $64 million question. i've been going over this in my head. i've taken every aspect from a terrorist event to a passenger going berserk getting into the cockpit and the crew itself. nothing makes sense to me from that angle. the only thing that makes sense is some sort of mechanical issue. we've really got to get credible information on this radar tracking from malaysian because it just seems impossible on what was performed. but if you takt it from the steps of nefarious, there are a lot of holes in it. granted, there are holes in the mechanical theory if you do a smoke or fume type situation also. but, you know, i lean toward the mechanical side. i'm open to it because everything seems to have holes to it. >> you're right about that. les abend, thank you for joining us. >> my pleasure. ten people now dead after a fiery crash in northern california. stephanie elam is at the crash site. stephanie? >> reporter: carol, a devastating loss of some young minds and some people who probably love them. coming up you'll hear from people who were first on the scene. at od, whatever business you're in, that's the business we're in. with premium service like one of the best on-time delivery records and a low claims ratio, we do whatever it takes to make your business our business. od. helping the world keep promises. ♪ i ♪ and i got the tools ira ♪ to do it my way ♪ i got a lock on equities ♪ that's why i'm type e ♪ ♪ that's why i'm tyyyyype eeeee, ♪ ♪ i can do it all from my mobile phone ♪ ♪ that's why i'm tyyyyype eeeee, ♪ ♪ if i need some help i'm not alone ♪ ♪ we're all tyyyyype eeeee, ♪ ♪ we've got a place that we call home ♪ ♪ we're all type e ♪ ♪ make every day, her day with a full menu of appetizers and entrées crafted with care and designed to delight. fancy feast. love served daily. because the more you know, the more we can help you. cut. lower. shave. chop. and drop your insurance rates. if you want to save hundreds, talk to farmers. ♪ we are farmers bum - pa - dum, bum - bum - bum - bum ♪ [announcer] the more you know, the more you could save. farmers could help you save hundreds on your auto insurance. call your local agent or 1-800-470-8496 today. it will be several more hours for the cleanup to finish after a three-vehicle accident in northern california that killed ten people. a fedex truck crossed a median and slammed head-on into a bus, a tour bus carrying students headed to a college tour last night. five students, three chaperones and the drives of both the bus and the truck were killed. nearly three dozen more were taken to the hospital following that crash. it happened in orland california, about 100 miles north of sacramento. stephanie elam is at the crash site. good morning, stephanie. >> reporter: good morning, kirl. it's devastating when you take a look at the loss of life. take a look at it as you can see day breaking here in california. i can tell you nine of the people on the bus died on scene, one person died at the hospital from their wounds, but as this investigation continues, you can hear from the people who were first on scene just how dramatic it was and how scary it was. take a listen. >> a lot of people screaming and begging for help, with all the flames and all the smoke. >> all of a sudden i heard a sonic boom. when i got there everything was engulfed and it was still spewing up black smoke. >> reporter: we do know that some of the people who were there, who were in that bus have been discharged from the hospital already, but still when you look at the fact that five high school students lost their lives, three chaperones and the two drivers of the cars. there was another car involved that was sideswiped by the fedex truck, they are believed to be okay. that is a little bit of good news. when you think about these young minds who were coming up to take this college tour, to have this devastating turn of events it's just really tragic, carol. >> do police have any clues at all about why that truck crossed over the median? >> reporter: it is really a bizarre one. at this point they say they don't know. we do know the n trnlthssb is coming here to investigate. the side here, the median is actually just bushes, shrubbery. no metal line between it or anything. these plants is pretty much what separates northbound from southbound. you talk about a semi truck coming through there, there's nothing really that slow it down. a very scary situation. >> stephanie elam reporting live this morning. thank you. still to come on the "newsroom," the so-called black boxes for flight 370. what happens when or if investigators recover them. ♪ make every day, her day with a full menu of appetizers and entrées crafted with care and designed to delight. fancy feast. love served daily. making moves that would put an adult in the emergency room. yet all they really want to do is grow up. it's funny, everyone i know wishes they could go back and feel younger. sound familiar? then test drive one of these. current non-gm owners and lessees use your $1,500 allowance to lease the 2014 cadillac ats for around $359 a month with nothing due at signing. take this simple test. press your tongue against it, like this. it moves! do you feel it? 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[ apple crunches ] fixodent. and forget it. good morning. i'm carol costello. thank you for joining me. it's day 35 in the mystery of malaysian airlines flight 370. the search area has shrunk again and the best window of opportunity is now closing. here is australia's prime minister earlier this morning. >> we're now get together the stage where the signal from what we are very confident is the black box is starting to fade and we are hoping to get as much information as we can before the signal finally expires. we have very much narrowed down the search area and we are very confident that the signals that we are detecting are from the black box on mh370. >> here is what else is new this morning, today's search area narrowed to about 18,000 square miles. it looks like the most recent signal heard just yesterday won't be of any help. search officials say it's unlikely that that signal picked up by that sonar buoy, it's unlikely that signal is related to the airliner's so-called black boxes. the other four signals are good. the batteries that send the signals to the search crews trying to locate them are now dead or dying. we're now five days past the minimum life span of 30 days. what about when or if the black boxes are found? the answers may raise eyebrows. the flight recorders will be handled over to the malaysian government whose expertise and competence has been questioned over the last 35 days. nic robertson is in the capital, kuala lumpur. malaysian officials came out and said once those black boxes are found, they will be turned over to the malaysian government. true? >> reporter: yes, it is true. what they're saying is the malaysian authorities will lead the investigation. we've heard this today from the head of the chief of police. we've heard it from the acting transport minister as well. this is under international conventions that this would be the case. but what the police chief did go on to say is that malaysian lacks the experts and expertise to properly analyze the boxes and recover the data. what he said is that malaysia would call in an expert to analyze the boxes. he didn't say where the expert would come from, what nationality they might be. he did indicate that mall lash is not up to the task but will lead the investigation. >> you would think the malaysian authorities would send those black boxes to the experts, not bring them back to the country. >> that part is not clear at the moment. it's not even clear who ultimately will head the investigation. we've heard of three different groups, if you will, set up by the malaysian authorities, each with their own chiefs to head the three different groups. the malaysian haven't yet appointed a chief investigator, not that they made public anyway and the indications are that once they're recovered, they would go back onshore in australia. there is a possible, far from confirmed, that the malaysians could have that involvement and bring in the experts on site to australia or wherever deemed necessary. it's not clear at the moment that they're demanding that they come back to malaysian. what they are saying is they will be making the decisions here, carol. >> i'm just curious. i know australia is heading up the search effort. how involved is malaysia in the search area? >> you know malaysia and malaysian officials get the first briefings. they get told what happens at sea from ocean shield, hms echo, all the other vessels from the sonar buoys that are out there. they get that information before anyone else. but the search teams generally report it on the ground first. they're recovering it. they've got the expertise and the malaysians sometimes respond to that. they are in that information circle and they are, we are told, the first to get the information. >> the investigation continues on the ground in malaysia. is there any update? have they found out anything new? are they sitting back and waiting for the black boxes to be recovered? >> the black boxes are going to be an important part of the investigation. they tell us the investigation is going to be long. what we heard from the chief of police is they have interviewed, taken statements from 205 different people including some of the families of the crew members. about a week or so back they told us 170 statements have been taken. so we can now add another 35 to that over the past week. today the police are working away at it. but they have said all along that the key information is going to come from these black boxes or at least from the data recorders they hope. >> nic robertson reporting live from kuala lumpur. i'm back in a minute. mine was earned in korea in 1953. afghanistan, in 2009. orbiting the moon in 1971. 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>> maybe. i always hear we're in for a correction and investors keep saying that. every time this sort of thing happens, we say maybe part of the reason it's falling is because there's some sort of correction in play. is there? >> i talked with a trader about that today. actually he sees this as a standard pullback. as tough as it is to see those triple digit moves of red for a couple days, it is a little bit much to stomach. this trader telling me this is more of a standard pullback from a correction. a correction would actually be 10% off the highs. he doesn't see that happening. just to put it in perspective for you, so far this year the dow is down about 3%. guess how much it was up last year? it was up last year 25%. when you put it in perspective like that, you realize the 3% lower really mott that big of a deal. however, it is a little bit tough to watch. >> alison kosik, thanks so much. the search for malaysian airlines flight 370 has dragged into its 35th day and filled with misinformation, missteps and frustrations. where does the blame lie? randi kaye has more for you. >> reporter: frustration with the malaysian government started early on, beginning with the flight plan. >> translator: malaysia talked nonsense and lied which delayed the search and rescue for eight days. we want an explanation for this. >> reporter: it was the satellite company, not the malaysian government which figured out the flight plan and provided vital information to narrow the search area. but despite that information, malaysian authorities kept directing some searches in the complete opposite direction including the coast of vietnam. >> until we locate mh370, search and rescue operations will continue in both corridors. >> reporter: those searches tax limited resources. the clock was ticking every second on the plane's black boxes. eventually they did abandon the search in the northern corridor. valuable time was lost. also in early march, u.s. investigators determined the plane had flown for hours after its last communication. based on satellite data from systems on board. the malaysian reaction, they denied it. but only days later the malaysian prime minister told reporters the plane had indeed flown for about seven hours after that last communication. and what about the last words from the cockpit? >> as far as the pilot communication, understand according to the retd cross it was about 1:19. >> it was 1:19 when we got the last transmission from the cockpit. >> reporter: not exactly. they got that wrong, too, admitting later on it was actually "good night malaysian 370." a mistake that is hard to fathom since they had the transcript of air traffic control's communication with the cockpit. not only was that incorrect, but so was their original statement about who said it. >> the initial investigation indicated it was the copilot who spoke the last time it was recorded on tape. >> reporter: now sources tell us it was the captain. more than a month of dubious information and denials. >> we have done quite an aimable job. >> reporter: and still no airplane. randi kaye, cnn new york. the hunt for 370 has been called the most difficult search in human history. so how does it compare to the search for the titanic? a task that took more than 70 years. i'll talk with an oceanographer who helped design the technology used to find the titanic. that's ahead on the next hour of "newsroom." this is the car i fell in love with! picking up my new malibu. no way! in march, over 100,000 people visited our open house event and brought home a new chevy. nope that's me, alright. this month, it's your turn. my equinox new line-up, new showrooms and a new experience. come find your chevy today! right now, get this sign and drive lease on a 2014 chevy malibu lt for around $249 per month. find new roads at your local chevy dealer. they don't know it yet, but they're gonna fall in love, get married, have a couple of kids, [ children laughing ] move to the country, and live a long, happy life together where they almost never fight about money. 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[ thunder crashes ] it doesn't. stop pretending. only flood insurance covers floods. ♪ visit floodsmart.gov/pretend to learn your risk. one of the faces of obamacare and its botched rollout will soon resign, in about 1:10 to be exact. the president expected to announce that at that time. kathleen sebelius is stepping down as health and human services secretary. she had been under fire when website problems over shadowed everything else. in her place the president plans to nominate sylvia mathews burwell, the current director of the office of management and budget. i'm joined by senior white house correspondent jim acosta and jennifer habercorn from politico. jim, i'll ask the obvious question. some people asking why did it take so long? >> reporter: well, what the white house is saying is she came to the president back in march and said she thought obamacare was on a better path and that she wanted to step aside after the end of this open enrollment period which just wrapped up in the last week. so that is what is happening. but no question. the president was under a lot of pressure up on capitol hill. he does not like to throw people overboard when they come under criticism. he kept kathleen sebelius in that job even in rough moments. you remember last fall up on capitol hill she was testifying about health care gov are.gov and then healthcare.gov crashed. she held tough. she stayed in there. the website was repaired and enrollment picked up. she got to announce yesterday they had 7.5 million signups. she gets to leave on somewhat of a high note. >> somewhat of a high note, jennifer. you hear so many different stories about obamacare, i'm not sure people know what to think even now. >> right. in terms of the last six months this is definitely the best that obamacare has had. they're riding on the high note. it's the end of open enrollment. they're able to say they enrolled 7.5 million. that number might even go up. if you think about the last six months or the last year, obamacare has been hit with bad headline after bad headline. if she's going to go out in 2014, this is the time to do it. ahead of the midterm election. >> let's talk about the confirmation process, jim. will it be easy? >> it is going to be easier than if somebody out of hhs or somebody out of the implementation of obamacare was going up on capitol hill to be confirmed. sylvia mathews burwell is the current budget director for this white house and she really doesn't have much of a health care background. her background is really sort of managing bureaucracy. they do really like her over here at the white house. they see her as somewhat of a rising star. by the way, she's from west virginia and her fellow colleague likes this nomination. she was confirmed 96-0. when she goes up to capital hill to be confirmed during this hearing, this will be a chance for the republicans to talk about about obama care which will be potent this fall. >> it will be dragged out isn't it? >> yes, it will be a contentious hearing. the vote for the position didn't get as much attention as this is going to get. republicans are going to use this hearing to drag out every problem that they see with obama care. they think the secretary has too much control over the decisions in the law. that is going to be a huge point of contention. republicans are not going to vote for anyone whose number one job responsibilities are going to be for this law. the democrats are up for re-election. senator in north carolina, they have to hang onto at least 50 democrats and -- in in order to get her confirmed and that will be difficult. >> we'll wait for the fun to start. many thanks to both of you. i'll be right back. i'm m-a-r-y and i have copd. i'm j-e-f-f and i have copd. i'm l-i-s-a and i have copd, but i don't want my breathing problems to get in the way of hosting my book club. that's why i asked my doctor about b-r-e-o. once-daily breo ellipta helps increase airflow from the lungs for a full 24 hours. and breo helps reduce symptom flare-ups that last several days and require oral steroids, antibiotics, or hospital stay. breo is not for asthma. breo contains a type of medicine that increases risk of death in people with asthma. it is not known if this risk is increased in copd. breo won't replace rescue inhalers for sudden copd symptoms and should not be used more than once a day. breo may increase your risk of pneumonia, thrush, osteoporosis, and some eye problems. tell your doctor if you have a heart condition or high blood pressure before taking breo. ask your doctor about b-r-e-o for copd. first prescription free at mybreo.com a man who doesn't stand still. but jim has afib, atrial fibrillation, an irregular heartbeat not caused by a heart valve problem. that puts jim at a greater risk of stroke. for years, jim's medicine tied him to a monthly trip to the clinic to get his blood tested. but now, with once-a-day xarelto jim's on the move. jim's doctor recommended xarelto. like warfarin, xarelto is proven effective to reduce afib-related stroke risk. but xarelto is the first and only once-a-day prescription blood thinner for patients with afib not caused by a heart valve problem that doesn't require routine blood monitoring. so jim's not tied to that monitoring routine. [ gps ] proceed to the designated route. not today. [ male announcer ] for patients currently well managed on warfarin there is limited information on how xarelto and warfarin compare in reducing the risk of stroke. xarelto is just one pill a day taken with the evening meal. plus, with no known dietary restrictions, jim can eat the healthy foods he likes. do not stop taking xarelto, rivaroxaban, without talking to the doctor who prescribes it as this may increase the risk of having a stroke. get help right away if you develop any symptoms like bleeding, unusual bruising, or tingling. you may have a higher risk of bleeding if you take xarelto with aspirin products, nsaids, or blood thinners. talk to your doctor before taking xarelto if you have abnormal bleeding. xarelto can cause bleeding, which can be serious and rarely may lead to death. you are likely to bruise more easily on xarelto and it may take longer for bleeding to stop. tell your doctors you are taking xarelto before any planned medical or dental procedures. before starting xarelto, tell your doctor about any conditions such as kidney, liver, or bleeding problems. xarelto is not for patients with artificial heart valves. jim changed his routine. ask your doctor about xarelto. once-a-day xarelto means no regular blood monitoring -- no known dietary restrictions. for more information and savings options, call 1-888-xarelto or visit goxarelto.com. new this morning, as concern grows over the russian troop build up near the ukraine border, the uss donald cook arrival is part of the u.s. effort to demonstrate support of the allies. according to nato those troops are ready tore combat. phil black is there. >> reporter: we are in the southwest region close to the border. we have been exploring this region for some days now. driven more than 1,000 miles without seeing any significant russian military presence. nato as you say, has released these images which backs up it's claim of the soldiers ready to rush up to the border. with hardware, we have visited two of the sites featured in the nato photographs. we have seen the presence, but none of the scale or the capability that these photos show. that doesn't mean that it is not there. we did not have unlimited view or access. we did not see what these photos show. it is important to know these photos being released are already more than two weeks old. the russian position has been that these forces are in this region conducting exercises. nato believes this is an invasion force or potential invasion force. establishing where the troops lie, even here close to the border, it is not straight forward. >> so russia's position is that these images are old and what are you talking about nato right? >> yes, they say they were taken last year. and nato has already come back and said no, that is not through these are valid. photos which they say show clear and empty fields before this build up. once she's forces have already been established here. so no real fighting just yet. they are going to establish two different troops. >> phil black reporting live from russia thank you so much. the next hour of cnn newsroom after a break. very confident that the dig nals are from the black box. the search narrowing. he went as far as any official so far. >> i'm confident that they are in the right place. >> new american search power. on the way. pretty incredible if you look at where we started. >> five weeks after disappearing from radar, and from almost three miles down. >> you see something on the surface. we'll find it. the search enters it's fifth week. you are live in the cnn newsroom are. good morning thank you so much for joining me. day 35 the search area shrinks again. it may not shrink by any more. five weeks in. the batteries of the black boxes are now dead or dying. hopes right on the up beat assessment from australia's prime min ter. they discussed the search effort and china's vital role in it. >> we expressed our sincere gratitude towards china. >> they are going to provide ships for the search and we have been grateful for their help. >> cnna matthew chance is at the heart of the search in perth australia. let's talk about what he said about the search area. he said they were within some mimes of those black boxes, what did he mean by that? >> reporter: he was referring, var ro contrary ro carole, that the search has been refined. remember, about a week ago the search area was would where within 80,000 square miles, now 18 squiare miles. even despite this, though, he was in beijing the chinese capitol meeting with the chinese president and he wept further than officials have gone so far in terms of characterising the progress so far. take a listen to what he had to say. >> we have very much narrowed down the search area and we are very confident that the signals that we are detecting are from the black box. i don't want to say anymore than that. i want to get the most up-to-date briefing. from what we are confident is the black box is starting to fade. and, we are hoping to get as much information as we can. before the signal finally expires. >> all right well to pour some water some of the expectations generated by those committents. the man charged with coordinating the search effort, angus houston said that in the past 24 hours or so, there has been no significant break through in the search. there was a 5th ping detected above the search zone yesterday. it has now been disclosed that has now been discounted from the investigation and from the search. as not being related to the m s missing aircraft. a very mixed bag of developments. >> reporting live from australia this morning. jeff wise author of extreme fear and thomas autschuller are, welcome gentlemen. >> good morning. nice to have you here. jeff, the prime minister said they have narrowed the search area to 18 square miles which i be guess is good but then he went onto say that the area is defined to a smaller area. what do you suppose he means by that? >> this is a crucial time. we are getting into our 5th week now. we have no tangible clues and no debris. this is on pace to be the most expensive search in history. the pinger now is dead or dying. within the next few days if we don't have something, we won't have thig. the prime minister is trying to bo boltster optimism. the families are complain that go they haven't been given information. they are trying to keep people's hopes up. do you agree with nothing to show for it? >> they have four separate in ta stances where they did pick up sound. >> they have some information that leads them to think that they are in a good position to start doing more aggressive searching and that is what they were doing with the buoys. a lot of this is how well the date that they they see coming off of the pink he pings, how t model that back to an understanding. they will need to keep on looking for acoustic events until they feel confident that the events are dead. let's assume, he are supposed to let 30 days past. if those batteries are dying today or dead? this could mean things for the search? >> even what they are doing right now is unprecedented. the way that you look for the plane in the ocean is to find the debris. and then search the area under that point. they have never been able to find wreckage. they sort of struck out at random and hoped that they would find something in the random part of the ocean. they are aputting their hopes o this one signal. and so that is why i think it is a long shot. >> that is not exactly what they are saying. no, not at all. they are saying that the signal does match a signal that is coming out of the black boxes. they said that didn't match but that was different technology that came from above and these four separate instances of sound came from below with that high-tech hydrophone, right? >> probably what happened there was the frequency or signal characteristics didn't look like the simple aviation pinger. i wouldn't want to judge them. but think about what they are built for. they are built to detect submarines which are running quietly. they are 1,000 feet and well be low the noise that is coming from the surface of the ocean. they are very, very sensitive. it is probably discounting that detection. in spite of what you have just said. will they deploy those fairly soon? >> they haven't had a tpl signal in four days now. it has been quite a while since they have got ten any continuinn that it is still alive. >> the next thing to do is clearly to send down that auv that under water robot. see if you can locate something that would correspond those pings that were detected. >> thank you so much. still to come in the newsroom. lessons from the titanic. and ask why he believes the technology in the search for this missing plane may not be enough to get the job done. what can i do on a $7 a month android plan from tracfone? check the weather. borrow ted's wheelbarrow. post big tomato pics. buy a birdhouse for sparrows. download gardening apps. answer my wife's texts. search how to sculpt hedges into a t-rex. i can do all that with my android from tracfone for as low as $7 a month. 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[ male announcer ] open your eyes... to the 6-cylinder, 8-speed lexus gs. with more standard horsepower than any of its german competitors. this is a wake-up call. ♪ the search for flight 370 has been called the most difficult in human history and it is an act comparison for the search of the titanic. like the search for flight 370 it was also filled with difficulties to focus on some of the problems with the technology. he helped design the optic technology that discovered the titanic. you called the technology in the search for flight 370 lame why? >> i'm sorry if i used that expression. i would say, the technology is inadequate and we could do a better job if we had better marine technology. i think the disproportion ality between the boat that they are using and this little yellow fish it is a tough thing. you are only in one place at one time. >> why don't we have those things available? >> we are in a pretty primitive sta state. >> we don't have the tools to do the job there is not a huge incentive to use those tools. >> let's talk about the pings they are detecting. the battery could die at any moment. >> should we switch to a visual search. >> which is why experts have been talking about using sonars. a couple of fields to the side. while you are mapping along. with the visual analogy. you have to remember that these vehicles are moving slowly. probably the same speed as a fast walker. given the limited view, it is going to be a long time before you can search 19,000 square miles. >> 18,000. that is the number today anyway. do you see any parallels? >> it is a long time. we had a path of the titanic, we didn't see it make a left turn. 100 square miles, certainly not a 100 that we are talking about today. >> i don't think we have the sec to toth. >> the navy hasn't been running submarines for a long time. i think we didn't have the technology at the time. it was still pretty deep. >> and 30 years ago, you got two or three hours on target and then it is a long ride back up. >> and another question i wanted to ask you. why do you think we had this continued fascination with the titanic? sort of get us all kind of anxious, we all take planes and trains. it was a great leveller as you probably recall. you had people in steer age, it was sobering for everyone to realize that we are here and have the same liabilities in terming of what we do and where we go. that made it a warm story. plus sort of the fame of the people that were on that ship. >> one more question, when you guys finally located the titanic after decades. what was that feeling like? >> well, i was on shore. i was fielding media much like this. there was a big feeling of elation. it was a victory for the technology in terms of us that are very interested in terms of exploration. we can discover things in the ocean that we haven't been able to do before. it was a huge success. >> thank you so much. i appreciate your being this morning. >> you are very well come. >> still to come, a bus filled with students looking to tour a california university ends in tragedy. good morning stephanie. >> reporter: very tragic, tragic turn of events here and we are going to tell you why there are several high schools in los angeles that are upset by this event here in northern california. ♪ led to the one jobhing you always wanted. at university of phoenix, we believe every education- not just ours- should be built around the career that you want. imagine that. ♪ hooking up the country whelping business run ♪ ♪ build! we're investing big to keep our country in the lead. ♪ load! we keep moving to deliver what you need. and that means growth, lots of cargo going all around the globe. cars and parts, fuel and steel, peas and rice, hey that's nice! ♪ norfolk southern what's your function? ♪ ♪ helping this big country move ahead as one ♪ ♪ norfolk southern how's that function? ♪ a school trip for students to visit a perspective university ends in a crash. a fedex truck slams head on in he to a tour bus. it happened in california 100 miles north of sacramento. stephanie eilam is at the crash site this morning. >> reporter: good morning. we now know the cause that there were 45 children on that bus representing 15 high school hs. at those 15 high schools they will have counselors there to help them get through the loss. >> the images are horrifying. a bus full of high school students burst into flames after a head-on collision with a fedex truck. >> i went outside and everything was in flames already. >> reporter: the truck slamming into the bus full of high school seniors after place say it crossed over the median and into on coming traffic. >> when i got there everything was engulfed. >> reporter: the collision believing both drivers and multiple passengers dead. >> a lot of people screaming and begging for help. with the flames and smoke you had to cover your eyes. >> reporter: emergency crews raised to the scene. >> many had cuts, contusions, bumps of those that i saw one person when we arrived on scene that was on fire. >> screaming for help don't let me die, just help me. >> reporter: at least 34 people were rushed to local hospitals some lifted by helicoptered and others taken by ambulances. >> i saw one gentlemen on a board and his college clothes w. >> reporter: the high school students were on their way to visit a university. crash survivor posted this picture of the crash scene writing "can't believe what just happened i was asleep and next thing you know i was jumping out for my life". coming out here live, now that the sun is up, you can see they are out here starting to move the bus and the trailer which is unrecognizable behind it. members of the ntsb are on a plane making their way out here to tain this investigation which they say may take months. >> pope francis has made his strongest condemnation yet of sexual abuse of catholic clergy. in his comments at the vatican, the pope said he felt compelled to take on all of the evil that some have done and said the church must step up it's effort to prevent those from abusing children. >> still to come in the newsroom m malasia said they still need help with the black boxes. are they up for the task? 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[ gps ] proceed to the designated route. not today. [ male announcer ] for patients currently well managed on warfarin there is limited information on how xarelto and warfarin compare in reducing the risk of stroke. xarelto is just one pill a day taken with the evening meal. plus, with no known dietary restrictions, jim can eat the healthy foods he likes. do not stop taking xarelto, rivaroxaban, without talking to the doctor who prescribes it as this may increase the risk of having a stroke. get help right away if you develop any symptoms like bleeding, unusual bruising, or tingling. you may have a higher risk of bleeding if you take xarelto with aspirin products, nsaids, or blood thinners. talk to your doctor before taking xarelto if you have abnormal bleeding. xarelto can cause bleeding, which can be serious and rarely may lead to death. you are likely to bruise more easily on xarelto and it may take longer for bleeding to stop. tell your doctors you are taking xarelto before any planned medical or dental procedures. before starting xarelto, tell your doctor about any conditions such as kidney, liver, or bleeding problems. xarelto is not for patients with artificial heart valves. jim changed his routine. ask your doctor about xarelto. once-a-day xarelto means no regular blood monitoring -- no known dietary restrictions. for more information and savings options, call 1-888-xarelto or visit goxarelto.com. live in the same communities that we serve. people here know that our operations have an impact locally. we're using more natural gas vehicles than ever before. the trucks are reliable, that's good for business. but they also reduce emissions, and that's good for everyone. it makes me feel very good about the future of our company. ♪ frequent heartburn? the choice is yours. chalky. not chalky. temporary. 24 hour. lots of tablets. one pill. you decide. prevacid. ♪ 24 hour for some families of the passengers aboard flight 370 the leadership of the search has missing reports and conflicting information. >> we will be leading the investigation. all right? but of course, we don't have the export to open up the black box and analyze what are the contents of the voice data and the flight data. we have to get experts. >> once those black boxes are found. they will take control of that part of the investigation. the chief admits he doesn't have the resources to do it alone. welcome to both of you. >> hi carole. >> hi. >> nick, can you tell us the protocol. australia is currently in charge of the search operation. what happens next? >> the detail is from the defense minister, and he says that malaysia will lead the investigation and will direct it. he said it will be done in consultation with the countries that are helping. these nations but it is very clear, and the malaysian officials want to take charge of it and the indications that we have had up until now, there has been information that has caused people concern about the way that officials have handled it. but internally, it is important for officials to seem to be controlling this and seem to be directing how it is all handled. there is an important local component in the way they talk about this. >> does that mean malasia will sort of be in charge but not completely? >> they are in charge. that is the law, the rule, the treaty. they are in charge. everybody else is providing assistance to them. but, that doesn't mean they are going to continuer with those boxes. they will determine who gets them and who does the analysis. and it will be from among the groups of experts. they are saying, it is their case. they are in charge and they will decide and they are admitting that they don't have the expertise. they will decide among the experts who should have it. some people i have talked to, have said that australia does have the skill set to do it. and they will assistance from maybe a couple of other experts and not have to transport those boxes back to washington dc for the analysis. but where ever it is done and who ever actually does it. it will be for the decision of the malasians whether people have confidence or not that is the law. i know you have spoken to families, and i guess they wouldn't be overjoyed that malaysia is taking the lead? >> they would have concerns and those concerns might be eased by the fact that the french or the out tra australians who were involved of the recovery of the air france that went down off the coast. some have said they would like the french to be involved. another question people here would be asking, once the black boxes are recovered, who gets to sort of lead the investigation makes the in interpretations, was there anything on the voice recorder itself. they have expertise in doing that. there was a crash in 1995, mh 2133. the pilot was judged to have come down too quickly on the runway there. part of that was based on the flight data recorder. so malaysia does have experience on reading that data. they have raised questions on the outcome of that. but they do have if you will the no how to use the information once somebody has extracted it for them. i think that many times the malaysian police are like you know, we all assume they are like the keystone cops, but are they? >> no, they are not. and something we need to clarify that this from the beginning has been a police investigation with a tremendous amount of assistance and their civil aviation authorities the confusion that still doesn't end is on the radar interpretations whether the plane went up, down, side ways without them know. that is where much of the confusion and much of the media handling by them has been a ball of confusion. but the police have been under the radar all along in this thing diligently working and they still are. it has not been the police that have been questions let's say other than when they said they cleared the passengers after only three weeks or so. that was unrealistic i'll put it that way. >> thank you for your insight, i appreciate it. >> still to come in the news room. take a close look. it is not a giant quid, brian todd one of the new tools in the search for that missing plane. >> these are high-tech designed to detect under water signals. just ahead. 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[ male announcer ] and we do. it's how edward jones makes sense of investing. the latest glimmer of hope in the search for flight 370 came from a sonic buoy. the sound picked up proved not to be coming from black boxes but that doesn't mean that searchers won't continue to use them. they will. these teams are stretching the bounds of technology. these latest detection this week came from the censors that were designed for combat. they are dropped out of a plane. descend below the surface and hunt for their target. >> they are a censor package that is parachuted out of an aircraft. >> authorities thought they might have detected a man made signal this week but have since dialed that back. once it hits the water's surface. it has switches that start activating different deployments. there is dear in there packed in nicely. some of it floats to the surface there is a radio antenna that talks to the aircraft. and then the microphone, hydr are ophone is lit stening to a signal. they sent a cargo plane to indiana in recent days to deploy a cargo plane. >> anti-submarine mwarfare this is one of the tools that the navy has to look for and track the submarine. they need to find them and track them. >> on this mission, the buoys have been modified to detect sound in the range of black box pings. they are manning conpmpewters. they have a shorter range but they are durable. the beauty of these things, they stay out there for a long time. >> and then they expire and sink to the bottom. when they are deployed. they can go 1,000 feet down. how can they detect signals as far down? experts say the sound moves through the water in a matter that it cank be detected furth away. the sounds picked up are now not thought to be consistent with the signals. they might be able to. our source in the defense force is confident that the technology has been tested to send those down to a greater depth. you may see that in the days ahead. >> brian todd reporting live for us from washington. >> 21 people were stabbed in a high school outside of pittsburgh. good morning miguel. >> reporter: good morning carole. i am indeed in murraysville, pennsylvania where we are learning more about that tou troubled young man. a body at rest tends to stay at rest... while a body in motion tends to stay in motion. staying active can ease arthritis symptoms. but if you have arthritis, this can be difficult. prescription celebrex can help relieve arthritis pain, and improve daily physical function so moving is easier. because just one 200mg celebrex a day can provide 24 hour relief for many with arthritis pain. and it's not a narcotic you and your doctor should balance the benefits with the risks. all prescription nsaids, like celebrex, ibuprofen, naproxen and meloxicam have the same cardiovascular warning. they all may increase the chance of heart attack or stroke, which can lead to death. thischance increases if you have heart disease or risk factors such as high blood pressure or when nsaids are taken for long periods. nsaids, like celebrex, increase the chance of serious skin or allergic reactions, or stomach and intestine problems, such as bleeding and ulcers, which can occur without warning and may cause death. patients also taking aspirin and the elderly are at increased risk for stomach bleeding and ulcers. don't take celebrex if you have bleeding in the stomach or intestine, or had an asthma attack, hives, other allergies to aspirin, nsaids or sulfonamides. get help right away if you have swelling of the face or throat, or trouble breathing. tell your doctor your medical history. and ask your doctor about celebrex. for a body in motion. those little cialis tadalafil for daily use helps you be ready anytime the moment is right. cialis is also the only daily ed tablet approved to treat symptoms of bph, like needing to go frequently. tell your doctor about all your medical conditions and medicines, and ask if your heart is healthy enough for sex. do not take cialis if you take nitrates for chest pain, as it may cause an unsafe drop in blood pressure. do not drink alcohol in excess. side effects may include headache, upset stomach, delayed backache or muscle ache. to avoid long-term injury, get medical help right away for an erection lasting more than four hours. if you have any sudden decrease or loss in hearing or vision, or any allergic reactions like rash, hives, swelling of the lips, tongue or throat, or difficulty breathing or swallowing, stop taking cialis and get medical help right away. ask your doctor about cialis for daily use and a free 30-tablet trial. peoi go to angie's listt for all kinds of reasons. to gauge whether or not the projects will be done in a timely fashion and within budget. angie's list members can tell you which provider is the best in town. you'll find reviews on everything from home repair to healthcare. now that we're expecting, i like the fact i can go onto angie's list and look for pediatricians. the service providers that i've found on angie's list actually have blown me away. find out why more than two million members count on angie's list. angie's list -- reviews you can trust. investigators in this week's stabbing spree in a high school near pittsburgh are still trying to uncover a motive in the attack. they are earning about the 16-year-old in custody. >> good morning carole. the one thing that the attorney wants to underscore is that this was a random attack. no one was targeted. the 16-year-old was home the night before and we are learning about the acts small and big the heros took that day. >> 16-year-old brett hurt recovering from a knife wound to this back and a bruised lung speaking out. >> what was going through my mind, will i survivor will i die? >> that would be gracie evans a junior here and a friend that wouldn't leave his side. >> my best friend jumps in front of me and takes the knife for me and i started putting pressure on the wound. >> another everyone calls him buzz. he helped subdue them. >> these kids are like my own i've been with him for ten years. >> he knows he's in a world of stuff right now. and how serious it is. and he can't believe he did this. >> he says he remembers everything. >> of course he remembers doing it. he did it. this is not a who done it? this is a question of why. >> saying he targets no one specifically his lawyer hinted bullying and more of what drove this 5'2", hockey loving kid to this rage. >> i think there are things but i don't want to comment specifically right now. but things that occurred to what led us to this here today. >> there were no threats called in and will fight to have the 16-year-old who has been charged as an adult tried as a juvenile. >> he said ryble has been remorseful and truly understands what he has done and will call a mental health expert and his job now that he has been charged as an adult is to have that reversed and have him tried as a juvenile. >> where is he being held? >> a detention center 40 miles from here in monroesville. his parents have visited there. and it is a juvenile detention center, near the area here. >> got you. miguel marquz reporting live for us now. >> at the top of the hour, the president is exsepected to announce that kathrine sebelius is expected to step down. in her place he is expected to nomina nominate. here is another reminder that politics is not for the faint hearted. don't blink that was something that whizzed by the head of the former first lady, hillary clinton. it was a shoe and it came pretty close to hitting her in the head. brianna keeler has more for you. >> reporter: about to -- what was that a bat? is was that a bat? is that somebody throwing something at me? is that part of circ de solei? >> hillary clinton cracking jokes seconds after a woman hurled a shoe at her during a paid speech in las vegas. >> i didn't know solid waste management was so controversial. >> the hurler who slipped in without a ticket was taken into custody. it is not the first time objects were thrown at a politician. >> in iraq, this man threw two shoes at the president. >> thank good news she didn't play softball like i did. >> perhaps an item for her new memoire which her bluis said to out in mid june. expect more dodging from her. >> and i am thinking about it. >> cnn washington. >> still to come in the newsroom masters in full swing. at the top of the leader board. laura joins us from augusta good morning. >> reporter: good morning. a name that is familiar to many. but most associate it with the man who has made 22 appearances. i'll have more in a moment. 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(mom) i'm so excited. all right i said the president was going to announce his new nominee at the top of the hour. but things are running early for the white house today. kathleen sebelius will resign. she has very much become the face of the botched roll out of obama care. tell us more, jim. >> reporter: well carole it is a friday so we don't mind when things are starting earlier here at the white house. we do expect to see the president come out with this current health and human secretary and who he hopes to be his future secretary and that is sylvia matthews birdwell. the president is coming out right now. and i have been told that we should be hearing from the president and also sebelius and birdwell. >> good morning everybody. [ applause ] >> hey. [ applause ] [ applause ] >> all right everybody have a seat, have a seat. good morning. in my sixth year in office, i am extraordinarily grateful to have so many aids and advisers who have been there since the earliest days. but it is still bittersweet when any of them leave for other endeavors. in early march, kathleen told me she would be moving on once the first open rollment period under the affordable care act came. and after 7.5 million americans who have signed up for health coverage through the exchange. she has earned that right. [ applause ] >> all right. i will miss her advice, i will miss her friendship and her whit, but i am proud to nominate somebody to succeed her who holds these same traits in abundance, sylvia matthews-birdwell. now, just a couple of things about kathleen, when i nominated kathleen more than five years ago, i had gotten to know her when she was governor at kansas and had shown extraordinary skills there and was a great supporter during my presidential campaign. i mentioned to her that one of her many responsibilities at hhs was to prepare for a pandemic flu outbreak and i didn't know at the time that it would be her first task. nobody remembers that now but it was. it gives you the idea of the sorts of daily challenges what she has handles without fanfare and without knowledge that have been critical to the health of the american people. she has fought to improve children's health from birth to kindergarten, reduced racial and ethnic disparities. she has been a tireless advocate for women's health and of course what kathleen will go down in history for is serving as the secretary of health and human services when the united states of america finally cl lly delait quality affordable health care is not a privilege, but a right for everyone of these united states of america. [ applause ] >> kathleen has been here through the long fight to pass the affordable care act. he helped guide it's implementation even when it got rough. she's got bumps, i've got bumps, bruises, but we did it because we knew of all the people that we had met all across the country who had lost a home, had put off care, had decided to stay with the job instead of start a business because they were uncertain about their health care situation. we had met families who had seen their children suffer because of the uncertainty of health care. and we were committed to get this done. and that is what we have done. and that is what kathleen's done. yes, we lost the first quarter of open rollment period with the problems with healthcare.gov. and there were problems. but, under her leadership and her team at hhs turned the corner, got it fixed, got the job done, and the final score speaks for itself. there are 7.5 million people across the country that have the security of health insurance most of them for the very first time and that is because of the woman standing next to me here today. and we are proud of her for that, that is a historic