Majority of nationalities on board. Incredibly interested and have a great stake in the progress of the Search Operations, trying to locate that missing airliner. And i think that even though tony abbott was cautious in what he said he went a little further than any australian official has so far done in terms of describing the progress. Take a listen. We are confident that we know the position of the black box flight recorder to within some kilometers. Our confidence in the approximate position of the black box is not the same as recovering wreckage from almost 4 1 2 kilometers beneath the sea or finally determining all that happened on that flight. But what Angus Houston, the man in charge with overseeing and coordinating the multinational search effort, he down played the Prime Ministers remarks saying essentially theres been no major breakthrough. However, he said that the search area has significantly narrowed down to about 18,000 square miles, which is still a big patch of ocean, of course, but its much smaller, much more manageable than the 80,000 square miles that were being searched for pings over the course of last week. Much, much more manageable area. Also on the downside, i suppose, you may remember yesterday there was a fifth ping identified by an australian aircraft flying over the area where the Search Operations were under way. Thats been now ruled out as not linked to the missing Malaysian Airliner. Thank you for the latest. Lets break it down with david soucie, cnn safety analyst, mary schiavo, former Inspector General for the department of transportation. Good to have you both. The s s son sonobuoy ping, if they had been in use there they would have made thot not related, also. Should we have lack of confidence . No, they distinctively said that. Our confidence is intact that what they think they found in the others ones are good . Mine is. Mary, how many pings do you need before you have enough to start search for wreckage . Well, its not just the number of pings. You need a number of pings in a compact enough area so you can calculate where the location of the black box most likely is. Weve seen the diagrams that almost looks like a star, if you will, where theyve made various targets across the ocean to try to zero in not necessarily triangulate but get the point and then send down the bluefin. Why need to be able to figure out where in the midst of all the pings theyre going to send down the bluefin. Tony abbott said they are confident they are within kilometers. Then send down the bluefin. One would think but they want to take every last little bit of juice out of the batteries. Remember, there have been air crashes where they have sent down the side scan sonar and found the black boxes within a day or two and there have been some where it has been months. There was one in the java sea where the plane crashed in january and they got the black boxes in august. So thats why theyre trying to get every last little ping. At this point the black boxes will be fine if they have to wait a day or two more or a week or two more. The black boxes will be okay even though the battery is gone. David, thats obviously your concern, is that were going to lose battery life. We seem to be in the extended time period anyway, over time for the boatteries. So you search as long as you can . We talked to commander marks and he said he expected from the time they stop receiving the signals, the assumption that the battery is gone, they would continue to search for at least two more days after that just to be certain that theyve gotten, as mary said, all the juice out of the batteries that are available. I still dont get the proximity related to the ping pickup. The Prime Minister said within a few kilometers and now you tell me the search area is the size of New Hampshire and new jersey together. I dont get it. Theres two things. The search area, still looking for debris. When they talk about large search areas theyre talking about debris, not necessarily where the black boxes are. The search for the black box is much smaller than that. In fact, if you included all the pings you would still be within about 500 or so square miles is the area for the black boxes. Now, if you then exclude the extraneous pings, refracted pings or the small short ones that are five minutes and seven minutes and say lets focus on just the ones that we know are within the broadcast area of that box, now, the only one thats really credible as far as that to get distinguishing information is the twohour ping they got at first. That would indicate that tpl had been towed through the broadcast range of where the pinger is. That gives the you the best idea . Absolutely. You are buying the Prime Ministers confidence . If we didnt have the twohour ping i would be less confident because you dont know if youre just getting a refractive signal or a past signal that started from different location. But because of that im confident. His reliability has been pretty good. Mary schiavo, youve been making this reference, 1987, indian ocean, another crash there. So we do have a model of comparison in terms of how difficult this is and how long it can take. Just give us a sense of that. Well, in that crash the black box was picked up from 16,000 feet under the indian ocean. And that accident was South African airways. It was a long time ago. It was 87 but they didnt find any wreckage at first either. They were looking to the east of the crash zone and, in fact, the currents took it to the west. And so they had a mystery there on their hands as well. And in that case they didnt get any pings. They had a very good idea where it went into the water, however, and with two days with the submersibles, within two days they had a black box. But they had a really good idea of where it went in. They just didnt have any wreckage because they looked the wrong place. So there are many similarities. The black box was fine from 16,000 feet under water. And they were indeed at the right place when they sent the submersibles in. Maybe thats the sent narrow here. That holds the record, by the way, deepest undersea recovery from the black box was from the indian ocean. Hopefully that record stands and this one is more shallow water. Thank you for the perspective. David, thanks for explaining the difference in the search zone for the debris versus for the black box. That is confusing. Kate . Lets turn to a really horrible scene on a california interstate. Ten people, half of them High School Seniors, killed in a fiery crash. The students were on their way to visit a college together in Northern California when a semi truck collided headon with their charter bus. Both buses, both vehicles erupted in flames. Stefani elam is live in california with more on this horrible story. Good morning. Good morning, kate. It is a devastating accident. Besides those five High School Students that have died, three were adult chaperones that are v. Died and both drivers of the vehicle. Still at this point no one knows what was the cause to start this accident in the first place. The images are horrifying. A bus full of High School Students burst into flames on the side of a california highway after a headon collision with a fedex truck. Everything was in flames already. It was a couple of explosions after that. Reporter the truck slamming into the bus full of High School Seniors after police say it crossed over the median and into oncoming traffic. 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 the collision leaving both drivers and multiple passengers dead. Eyewitnesses helpless as fwlams consumed the buzz. A lot of people screaming and beg for help with all the flames and all the smoke. It was just cover your eyes. Reporter emergency crews raised to the scene to help the injured students. Many of them had cuts, contusionses, bumps, minor burns. The ones i saw i know that there was one person when we arrived on scene that was unfortunately on fire. Screaming for help, dont let me die, just help me. Reporter at least 34 people were rushed to local hospitals. Helicopter airlifted survivors. Others were taken by school bus and ambulances to local care centers. I saw one gentleman on a board. And his clothes were gone pretty much. I couldnt tell if his injuries were significant. I just kept praying. Reporter the High School Students were on their way to visit Humboldt State university this weekend. Just hours after tweeting a picture from inside the bus crash survivor Jonathan Gutierrez posted this picture of the crash scene writing, cant believe what just happened. I was asleep and next thing you know i was jumping out for my life. Absolutely terrifying to have to go through that. We know that nine of the people that died died here on scene while another died from their wounds at a local hospital. At this point, though, they do not expect any more people to die from the wounds. It seems like either you were killed or you got away with some bumps and bruises. Just a very terrifying, very scary, and very random scene here, chris. Thank you so much. It is amazing looking at the pictures that anybody walked away. Amazing to think it actually could have been worse. All right. Lets take you down to washington now. After months of taking beat for the botched of rollout of healthcare. Gov Kathleen Sebelius is calling it quits. Is she a casualty, has she had enough, is this job completed . What are they saying . Well, what they are saying over here at the white house, chris, is that Kathleen Sebelius went to the president in early march and thought the Affordable Care act was heading in good shape and the enrollment was doing fine atte the end of marc which would be last week and then she would step down and the president was okay with that. No question Kathleen Sebelius was the public face of one of the worst failures of the obama presidency, the botched rollout of healthcare. Gov. It did it to her when she was testifying up on capitol hill. It crashed right in front of lawmakers. And so its been a difficult tenure for Kathleen Sebelius but she gets to go out on a somewhat high note. She got to announced yesterday that 7. 5 Million People have signed up for insurance under the affordable choir act. As you mentioned, chris, the president will announce her replacement, sylvia birwell, at an event here at the white house later on this morning, chris. Tell us about this birwell, jim acosta, do you think shes going to get confirmed . Is the other side going to push on her for a metaphor to the resistance for the overall obama care scream . Well, you know, no question when Sylvia Burwell goes up to capitol hill this will be an opportunity for republicans to go after the Affordable Care act, to go after the obamacare. We can hear a full hearing of all of their grieve yans grieve time. She does not come out of the world of obamacare and health and Human Services. She is the president s budget director. The white house feels god about her management skills. She was part of the budget deal that was hammered out last fall. They feel pretty good about her handson deals when it comes with bureaucracy. There will be some flash points i would expect during her hearing but at the same Time White House officials do expect this transition to happen from Kathleen Sebelius to Sylvia Burwell to happen in may. That depends on the confirmation progress. That Means Congress is going to actually have to let a confirmation process happen. That has been tough and go over the last session plus. Theyve been starting to say positive things. John mccain last night tweeted that she thinks Sylvia Burwell will be fine over health and services. Perhaps a glimmer of hope. A friend of hers should buy her a sign on her desk that says, wasnt me, for all the people who are going to come in complaining. I dont think its going to show up at her desk. No . Maybe i will get it for her. Maybe you shall. Coming up next on new day, flight 370 dropped dramatically in altitude. Does this confirm what the investigators have said, that someone deliberately made the turn and also does this mean that someone deliberately tried to avoid radar detection or is there another explanation . Well take a look. Also, the Oscar Pistorius trial is at its crucial point. Why did he break down this time . Youre going to want to see it and hear it because the prosecutor is finally questioning about what happened that night. What Oscar Pistorius says he did versus the prosecutors events. Chalky. Not chalky. Temporary. 24 hour. Lots of tablets. One pill. You decide. Prevacid. 24 hour live in the same communities that we serve. People here know that our operations have an impact locally. Were using more natural gas vehicles than ever before. The trucks are reliable, thats good for business. But they also reduce emissions, and thats good for everyone. It makes me feel very good about the future of our company. It is day three of Oscar Pistorius crossexamination but the real test has now begun. The prosecution is going through what happened the night reeva steencamp was killed. Continually accusing pistorius of tailoring his testimony. Pistorius lost it once again grinding court to a halt. What is it like to be in that courtroom and watch this phase, this is what it all comes down to. Absolutely. Its so crucial how Oscar Pistorius bears up under this pressure and, of course, the state has been goating him. Theyve been chipping away at his version of events, challenging his credibility. You felt it was safe enough to leave your reporter on day three of crossexamination the prosecution questioning Oscar Pistorius fear of burglary in the gated community. You thought that it was safe enough not to immediately fix a broken window downstairs. I bought the glass for the broken window and it was in the process of getting repaired. Reporter the prosecutor accusing pistorius of tailoring evidence. You are covering up, youre tailoring your evidence. Reporter the athlete questioned about whether or not the alarm in his home was activated on the night he shot steencamp. Pistorius said he must have turned off the alarm because it didnt go off which the prosecutor described as a vague response. T pistorius blaming any slipups on his answers from being tired. Mr. Pistorius, its important that you should be all here when youre in that witness box. You understand that . I do, my lady. Reporter the prosecution asking the athlete a crucial question. If you thought a burglar was climbing through the bathroom window why didnt he discuss the noise with steencamp when he knew she was awake. Shes awake. Did you not say, reeva, did you hear that . I would there was no thoughts in my mind that i heard what i heard, my lady. I didnt need confirmation. Reporter on thursday the prosecution laid out the case the night pistorius shot and killed steencamp. I built my case to say that when you got up, you had an argument, thats why she ran away screaming. Reporter the states theory, the olympian and his girlfriend had a heated argument in the bedroom and she fled to the bathroom trying to escape an angry pistorius. But the olympian said he feared there was a burglar in his home. I didnt intend to shoot. I was pointing my firearm was pointed at the door because thats where i remember that somebody was. When i heard a noise, i didnt have time to think and i fired my weapon. It was an accident. Reporter the prosecutor unwilling to believe the shooting was anything less than murder. Your version is so improbable that nobody would ever think its reasonably possible true. Its so improbable. Reporter that prosecutor constantly provoking Oscar Pistorius. In the past two days while hes been on the stand he said, it never happened, your version is a lie, youre adept in your version, over and over again. So much so the judge actually enter jeked this morning, telling the prosecutor to pind mind his language, that he cant call the witness a liar while hes on the stand. Back to you. Adversarial role in the courtroom going to a whole new level, it appears. Thank you very much following the pistorius trial for us. Lets get over to our meteorologist Indra Petersons for us. Im smiling, i got to say weekend. Thats the important part. Another important part is the temperatures. Near 70 in new york city. Mid 70s, even 80s in d. C. Even to florida, everyone looks good but keep in mind that doesnt mean were not seeing the rain. Yes, there are some chances for showers but not light. These are not big systems as we go through the weekend. Okay, under an inch over towards minneapolis. Half an inch near chicago. Its not a big deal. All we want to focus on are the temperatures. None the less, its making it through the ohio valley right now and spreading into the northeast on the friday night plans. Not great but it clears out by saturday. Midwest, keep in mind another system will start to make its way through. This one a little stronger. This is the guy that does have a threat for severe weather. Minimal in opmaha. Through dallas, keep that in mind if youre flying on sunday. We could see some delays in that region. Heres something that came out. Hurricane season, keep in mind theres a threat now for an el nino. Effe expecting a below average hurricane season. Only one major hurricane expected. Keep in mind we had andrew it was also below average season but at the time it was the costliest season for a hurricane at the time. If you want to know the names, there you go