above the fray unlike in 2013. >> what difference at this point does it make? >> reporter: this time hillary clinton was poised, practiced, pushing back with putdowns. >> i wrote a whole chapter about this in my book "hard choices." i would be glad to send it to you congressman. >> i'm sorry it doesn't fit your narrrrive, congngssman. i can only tell you what the f fts were. i know that's not the answer you want to hear. >> reporter: at other times her face said it all laughing off unwanted suggestions, or scorn, reflecting days of preparation at home, sent off to battle this morning by her husband bill. republicans were armed and reddy. >> happy to bring breakfast in, but it would sure be helpful if we could get to the answer that wasn't a trick question at all. >> they were concerned, the white house, the amount of credit you were getting as opposed to the amount of credit the president's getting. that's true, isn't it madam secretary? >> look, the president deserved the lion's share of the credit. >> why is the white house uptight you're taking the credit? >> reporter: at a fierce dispute over a controversial former clinton political aide sydney blumenthal, barred by the obama white house working at her state department but sending private advice about libya to r private e-mail account. >> madam secretary, he had unfettered access to you. >> i don't know what this line of question does to help us get to the bottom of the deaths of four americans. >> i'll be happy to help you understand that, madam secretary. >> reporter: it was clinton who spent the most time talking about the victims of the attack. >> you know, i would imagine i thought more about what happened than all of you put together. i've lost more sleep an all of you put together. >> reporter: information officer and air force veteran sean smith, cia officers tyrone woods and glen doherty and ambassador chris stevens. >> i stood next to president obama as marines carried his casket and those of the other three americans off the force base. >> reporter: clinton has b bn here now all day into the ght, testifying she never received a requeue for momo security from although the ambassador made those requests hundreds to security officials. for all the talk about hillary clinton's e-mails, she said she did most of her business offline in classified briefings and didn't even have a computer in the state department office. lester? >> andrea mitchell on capitol hill. let's turn to our political director, moderator of "meet the press." assuming no bombshells emerge, does benghazi remain a potent campaign issue deep into 2016? >> it's a potent issue with the republican electorate. it is not going to go away in republican circles, but as a general election issue for hillary clinton, benghazi, it's hard to see that today somehow changege minds in a negative way for hillary clinton. ififanything, you have enty of democrats who feel betterr about hillary clinton today than they did yesterday, who of course felt better about her yesterday thanks to joe biden, performance. as performance art, she has had a@very presidential candidate good day. there has been an awful lot of deection, lester. i do think the issue, the larger issue of libya policy, decisions she made and participated in when it came to arab spring and everything that led to that moment is going to be a relevant topic and tough thing for her to defend during a presidential election. an american soldier has been killed in iraq in combat the first nim four years. it h hpened during a hostage rescue mission rried out with kurdish forces, a key u.s. ally and the fight against isis. in a statement, isis dismissed the raid as a failure, but the pentagon is calling it a big success despite the loss of life. our chief foreign correspondent richard engel has the dramatic details. >> reporter: the raid was supposed to rescue kurdish hostages like these held by isis in cages. u.s. intelligence have learned they were about to be executed. so when the kurds, washington's closest allies in iraq asked for help rescuing them, u.s. forces agreed. at 2:00 a.m., american special ops and kurdish forces headed to the town landing near an isis prison on the outskirts of toto. sources s s isis had already dug mass graves for their hostages. kurdish troops stormed in. about 20 isis guards inside fought back. so the u.s. troops there to assist guard the perimeter and communicate with u.s. aircraft above decided to step in, to protect, the pentagon says, their kurdish allies and the hostages. about 15 isis guards were killed but not before an isis fighter shot one american commando so far unidentified, who later died of his injuries. the first american to die in combat in iraq since u.s. forces withdrew four years ago. but the pentagon insists this was a unique situtuion. >> u.s. forces are not in an active combat mission in iraq. i can say that directly. >> reporter: when the fight was over, the americans and kurds loaded the freed hostages, 75 of them, according to u.s. officials and at least five captured isis guards, on the helicopters and left. the hostages turned out not to be kurds. around 20 were kidnapped iraqi security forces, others included so-called isis defectors. still, the u.s. military is calling the raid a huge success because of the number of lives saved in one of the biggest hostage rescues anywhere in recent memory. but the operation also shows that u.s. forces are doing a lot more than just advising in the war on isis. in this case, they were in close cocoat, had to come to the aid of their a aies at the cost of one american life. lester? >> richard engle, thanks. new developments in the road rage shooting of a 4-year-old girl in albuquerque, new mexico. the suspect appearing in court after he confessed to the crime. the young victim's family is speaking out about their loss to nbc news national correspondent miguel almaguer. >> this is possibly one of the most atrocious acts in the history of this city. >> reporter: 32-year-old tori torres didn't enter a plea, though he confessed to the road rage murder of the 4-year-old shot i ithe head as her father drove her home from school. >> he took my ileana. she is not going to first grade. >> reporter: speaking indedth for the firyt time, alan garcia said detectives asked him not to talk about the shooting, what witnesses describe as two drivers yelling at one another along i-40 in albuquerque. >> when someone cuts you off and you honk at them and everybody's done it, everybody says breath. >> he made a choice to pull out his gun. >> reporter: lily loved music nearly as much as she loved her on the drive home she asked tooit next to isaac.c. >> so many what-ifs. if i let her move her seat over six inches, six inches. >> reporter: in their grief, the garcias are grateful, first responders did all they could. isaac still wears the coat a fireman took off his own back. they hope there are lessons in their loss. >> she was a beautiful, beautiful soul and from this something positive to come out of it. >> reporter: with so many touched by this tragedy, nearly 70,000 has beennaised by strangers for t t garcia family so they can bury 4-year-old lilly. as for tony torres, police say earlier today in his home they found both the suspected get-away car and the gun used in tuesday's shooting. lester? >> miguel, thank you. a mystery in st. louis where seven churches have now been set on fire in just over two weeks. the latest in a string of arsons was discovered early this morning at a church with a mostly white congregation. the others happened in largely african-american neighborhoods. in all, the cases the door of the churches were ignited. so far no injuries have been reported. right now, we are monitoring two major weather systems closing in. one is a torrential rain maker sweeping intotohe south central u.s. bringing potentially life-threatening flooding. 10 million people watches already. the other system is a ferocious category 4 hurricane about to slam into mexico, and the damage could be catastrophic. al roker is tracking both storms. this doesn't sound good at all. >> it really doesn't. one impacts on the other. we've got this hurricane patricia that is going to make landfall some time friday evening. it's going to weaken over the mountains of mexico but bring catastrophic flooding. remnants and moisture will stream into texas. we already have a slight risk of strong storms in central southern texas, isolated wind gusts 70 miles per hour. can't rule out rnados tonight.t. thenen we have flash flood watches a aeady in effect i io early next week that. moisture from the gulf and hurricane patricia combined to create cells that just sit over central texas. tomorrow we are looking at about a five-inch bull's-eye between austin and waco, texas. as we move into saturday, the rain extends into south eastern texas. the heavy rain continues over central texas. we are talking another five inches. by the time we get into tuesday, talking austin, dallas, all the way down to corpus christi, as much as 12 inches of rain. this is going to be catastrophic flooding. and beach erosion, as well. coastal impacts. we'v'vgot coastal flood warnings and wawahes all the way into louisiana. there is going to be a lot of beach erosion. this is going to be something we are going to be talking about early next week. >> al, thank you. we said it before and again this evening we are following developments of a fresh embarrassment for the u.s. secret service. it's a new report reveals agents were found sleeping at their posts while on the job, including one incident at the white house. reports the agency is employees are overworked, overtired and putting security at risk. >> reporter: the official alert sent to the secret service is blunt and direct. finding two officers were found sleeping at ththr posts, discovered during inspections prompted by the now-infamous incident when a fence jumper got into the white house. these safety issues post an immediate or potential danger to u.s. secret service officers and those who they protect, and blames fatigue from shifts and long hours. federal law enforcement officer secret service, you should be operating at a much higher caliber than this. >> reporter: secret service records show one agent worked almost 60 hours of overtime before he was caught sleeping. agency sources say much of that overtime was on the flight back from president obama's issued a statement saying the secret service does not agree with the conclusion. in both instances, the officers had sufficient days off prior to the incident. the chairman of the house committee that oversees the service isn't buying that. >> their staffing is down 10% and they are not able to fill that void because the cultural problems are so deep seeded, people are leaving the secret service. >> reporter: this is the latest in a string of embarrassing episodes, including agents running a white house security barrier after drinking. tonight the white house is backing the agency and its director, but claims he was scheduled to now he'll have more questions to answer. chris jansing, nbc news, the white house. we have breaking news from washington. the drama may soon be over in the search for a new speaker of the house as congressman paul ryan has officially jumped in the race. feeling he has enough support from the republican caucus and his conditions satisfied. ryan declared his candidacy moments ago in a letter to colleagues. the vote for a new speaker will take place next week. still ahead as we continue here tonight, a new warning for drivers who use hands-free devices. you may think all your focus is on the road after you hang up a call or change the radio, but you may still be distracted for a surprising and dangerous amount of time. >>. >> also, stand and deliver. how ce classrooms are doing away with old school desks and this bale of hay cannot be 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(children giggle) symbicort. breathe better starting within 5 minutes. call or go online to learn more about a free trial offer. if you can't afford your medication, astrazeneca may be able to help. i've got two reasons to take care of my heart. thth's why i take meta. meta is clinically proven to help lower cholesterol. try meta today. and for a tasty heart healthy snack, try a meta health bar. >>. >> we are back with an eye-opening new look at the dangers of distracted driving which kills over 3,000 americans each year. we heard about the dangers of talking and texting while driving. many states have laws outlawing it unless it's hands-free. researchers are warning hands-free doesn't mean risk-free. as stephanie gosk shows us. >> reporter: not long after drivers started using cell phones, they realized how dangerous that can be. hands-free laws went up all over the country. what if it's not just that's dangerous? >> cajole cooper. >> reporter: a new study conducted by aaa and the university of utah shows hands-free is not as risk-free as some think. >> our brains aren't configured to multitask well. we are asking our brains to multitask while driving that we don't do well. >> reporter: a diver can remain distracted up to 27 seconds after use voice command technology to change music, send a text or make a phone call. now in this neighborhood, for 27 seconds, i'm hitting stop signs, i've got to make turns, have to avoid people on bicycles. the whole time, according to the study, my mind is elsewhere. in a statement, the auto alliance said, we already know that voice operation allows drivers to keep their hands on the wheels and eyes on the road, two things that are critical to safe driving. >> i guess that is a stop sign. >> reporter: the study showed older drivers struggle more than younger ones with the new technology. the biggest distractions are when it doesn't quite work. >> call ana turner. >> call henry burns. >> no, no. >> reporter: even when everything works perfectly, researchers suggest using hands-free devices cautiously. >> just because your car lets you do it doesn't mean it's safe to do it. >> reporter: as awful as this may sound, sometimes the song, wait. stephanie gosk, nbc news, ft. lee, new jersey. a lot to think about there. we are back in a moment with the food many of you enjoy so much you may literally addicted to every insurance policy has a number. but not every insurance company understands the life behind it. for those who've served and the families who've supported them, usaa. we know what it means to serve. get an insurance quote and see why 92% of our members plan to stay for life. to feel this special... you need to eat this special. i love it kellogg's special k... ...made with whole grains and fiber ...to help a body thrive. i love it folic acid and vitamin d... ...to make a body feel this good. start your day with 150 nourishing calories... ...in a bowl of special k. i love it eat special, feel special. discover more ways to eat special ...with special k. i was out for a bike ride. i didn't think i'd have a heart attack. i'm mike, and i'm very much alive. now my doctor recommends a bayer aspirin regimen to help prevent another heart attack. be sure to talk to your doctor before you begin an aspirin regimen. hey i'm here on the red carpet where our next arrival is... whoa! toenail fungus!? fight it! with jublia. jublia is a prescription medicine used to treat toenail fungus. use jublia as instructed by your doctor. are you getting this?! most common side effects include ingrown toenail, application site redness, itching, swelling, burning or stinging, blisters, and pain. oh, epic moves, big j! fight it! getting ready for your close-up? ask your doctor if jublia is right for you. visit our website for savings on larger size. 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(children giggle) symbicort. breathe better starting within 5 minutes. call or go online to learn more about a free trial offer. if you can't afford your medication, astrazeneca may be able to help. locating a man wanted for murder. the three siouxland governors met today to dicuss economics and business. and... an event helping change the lives of people half a world away. we'll take you there live. finally tonight, it's an idea some swear by in the office. i'm doing it right now. can it work in the classroom? our joe fryar takes us to a school that's solving the age-old problem of getting kids to sit still and pay attention by not having them sit at all. >> reporter: students in northern california are taking a stand. >> i really like it. >> reporter: spending standing desks. >> i just focus better when i'm standing. >> reporter: teachers say they are seeing a big difference. >> i notice i can hold their attention for longer because i feel like their brains and their body are active and more awake. >> reporter: for students, it's like a lesson in newton's first law. >> it's like a body at rest stays at rest but a body in motion stays in motion. >> reporter: after testing the idea in a few classrooms last year, the school dumped all its old-fashioned desks, replacing them with taller models. even the principal has one. if someone says, kids shouldn't be standing all day, what do you say to that? >> we actually don't have them standing all day. >> reporter: students can take a seat whenever they are feeling tired and every desk has a fidget bar to keep kids moving. >> it releases your energy and it's not having you slumped over, you're sitting tall. >> reporter: researcher james levine says getting kids to move more during the day helps them in the classroom. >> their attention is better and skill development is better. >> reporter: the biggest challenge, cost. they raised $110,000 for new desks with help from stand-up kids. >> our mission is to get these desks into as many public schools as we can in the next ten years, hopefully all of them. >> reporter: standing doesks are gradually popping up in classrooms and offices around the country. >> i think for christmas people should start asking for them. >> reporter: a growing movement for more movement. joe fryar, nbc news, california. >> i'm feeling very old school at this big desk. that's going to do it for us on this thursday night. i'm lester holt. for all of us at nbc night.i'm robert lowe in for sheila brummer, matt breen will join us in just a few minutes. a florida man wanted in connection to a homicide has been spotted in the sioux city area. authorities say 28-year- old jonathan berrio is wanted on second degree murder charges in connection with a homicide in miami, florida. police confirm berrio was sighted in sioux city this week where they say some of his family lives. berrio is a white male and has a tattoo of a knife under his left eye. police say he's a threat to the public. "he should be considered armed and dangerous," said detective nick thompson with the sioux city police department. "if anybody locates him, they should not approach him. we request that they call 911 right away and provide the information so we can react appropiately." if you have any information on berrio's whereabouts, contact the numbers on your screen. crime stoppers is offering a reward of up to three-thousand dollars if a tip leads to an arrest. it was an afternoon of bragging rights and looking to the future in south sioux city, nebraska. ktiv's tiffany lane was at the tri-state governor's conference and has the details. tiffany? robert, the conference was full of local business and political leaders who came together to listen to all three of siouxland governor's talk about where they see their economies going. student level.

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