ice melt. visibility will be lowering with fog around. >> that's a lot of green on the radar. i'm jim rosenfield. would he see you tonight at 11:00. on this tuesday night, breaking her silence. hillary clinton finally speaking out about her personal e-mail what she says she deleted and what she says is off-limits. expelled fraternity brothers thrown out over a racist chant. now a new video clip. a house mother using the same slur. security risks. an nbc news investigation. hundreds of i.d. badges used to access secure areas lost or stolen from the nation's airports. and caught on camera. chilling video from a quiet town. a stranger snatches a toddler and runs off. tonight the children who gave chase, and the hunt for the kidnapper. "nightly news" begins now.

>> announcer: from nbc news world headquarters in new york, this is "nbc nightly news." reporting tonight, lester holt. good evening. hillary clinton is not yet a candidate for president, but she may have gotten a preview today of what the campaign trail could be like when she came face to face with reporters here in new york. all hungry to know why she used a personal e-mail account to conduct government business quhen she was secretary of state. the simple answer mrs. clinton says convenience. pointed out she broke no rules and she has encouraged the release of her official e-mails. but what about those e-mails that she deemed non-official? what was in them and why were they deleted? andrea mitchell has a lot more for us. >> it was a media frenzy unlike anything ever seen at the u.n. a potential presidential candidate finally explaining why she used a private e-mail system while secretary of state. >> i operate on theed for

convenience to use my personal e-mail account which was allowed by the state department because i thought it would be easier to carry just one device for my work and for my personal e-mails instead of two. >> reporter: after two weeks of stonewalling hillary clinton acknowledged the fallout. >> looking back it would have been better for me to use two separate phones and two e-mail accounts. i thought using one device would be simpler, and obviously it hasn't worked out >> reporter: she said she has turned over all work related e-mails, 55,000 pages to the state department. but deleted personal e-mails. >> the server contains personal communications from my husband and me and i believe i have met all of my responsibilities and the server will remain private. >> reporter: her examples all deeply personal. >> at the end, i chose not to keep my private personal e-mails.

e-mails about planning chelsea's wedding, or my mother's funeral arrangements condolence notes to friends. as well as yoga routines. >> reporter: it lasted 20 minutes. >> can you explain how you decided which of the personal e-mails to get rid of how you got rid of them and when and how you'll respond to questions about you are being the arbiter of these? >> i had no reason to save them. but that was my decision because the federal guidelines are clear, and the state department request was clear. >> reporter: and what about hacking? >> the system we used was set up for president clinton's office. and it had numerous safeguards. and there were no security breaches. >> reporter: the leading democrat who had urged her to talk is now satisfied. >> the important thing was that she stepped forward and talked to people. and i think people will be reassured listening to it. >> andrea mitchell and chuck

todd nbc news political director and moderator of "meet the press" join me. andrea the democrats wanted her to come out and speak today. what's the early read from republicans? >> the early read is negative. trey gowdy is the republican chair of that benghazi investigating committee. he said not only did she answer all the questions, he wants her to turn over the server to a neutral party and says he will call her at least twice to testify before his committee. >> what does it tell you about her future? >> that's the thing here. let's talk the obvious observation here she's running for president. >> she wouldn't do it otherwise. >> if she weren't going to run for president, she wouldn't have done this press conference. what's interesting, the po lit ohco lead really nailed it. hillary rodham clinton's presidential campaign started on terms set by her adversaries. that itself tells you this will

be a long hard slog for her. i think today she did the bare minimum as far as democrats are concerned. she didn't satisfy her media critics, and she certainly didn't satisfy her republican critics. this is going to be a typical clinton campaign. >> thank you. sparking outrage throughout the country today, the university of oklahoma expelled two students after video emerged of fraternity members engaging in a racist chant. now a new video clip has surfaced that is only provoking further outcry. we get more from gabe gutierrez who is on the campus tonight. >> reporter: it is the chant that shocked the country, and tonight one of the students involved has been iden. the student pumping his fist is parker rice a university of oklahoma freshman who graduated from a jesuit prep school in dallas last year. >> i'm not only appalled but

i'm saddened and hurt that we're here in 2015 and still dealing with racism and bigotry. >> reporter: ou expelled two students but won't name them citing privacy laws. >> we're going to send a message. >> reporter: now this short clip posted online showing the long-time house mother for sigma alpha epsilon using the same racial slur. in a written statement, she said she is heart broken by any racist portrayal. she does not tolerate any form of discrimination and she was only singing along to a rap song. today at the sae house, members rushed to move out before the midnight deadline. the fraternity shut down, leaving its cook without. online donors have raised about $50,000 for him. >> it's like getting punched in the stomach. >> reporter: jonathan davis said he was the first african-american pledge ever at in 1999. >> 9 house turned into a symbol

for modern day racism. >> reporter: we spoke with an ou senior who asked that we not use her name or show her face because she didn't want to be associated with the fraterni. she says she heard the same chant on a bus two years ago at an sae date party. >> i would definitely say it's not an isolated incident. >> reporter: the fraternity's national headquarters are investigating the claims. any suggestion this chant was a trad. another student rally is planned here on campus later tonight. the university says its investigation is not over and that more students could be disciplined. lester? >> gabe gutierrez, thank you. in the trial of the alleged boston marathon bomber for the first time today we got a look at what dzhokhar tsarnaev scrolled inside the boat where we hit just before his capture. tsarnaev may have believed those would be his final words in the last moments of his life as police closed in. nbc's pete williams was in the

>> reporter: four days after the marathon bombing, police discovered dzhokhar tsarnaev hiding in a boat stored in a watertown backyard. it was clear he had been injured, shot several times. pictures revealed publicly today clearly show that the boat was riddled with police gunfire. they show three sections streaked with tsarnaev's blood, with at least 21 bullet holes visible. his older brother tamerlan died earlier that day during a police shoot joud. in pencil he wrote, i'm jealous of my brother who received the reward of paradise god willing, before me. god has a plan for each person. mine was to hide in this boat and shed some light on our actions. he criticized u.s. military operations in the muslim world and said you are fighting men who look into the barrel of your gun and see heaven. the judge adjourned court early to go look at the boat in fbi custody for himself, and is now deciding whether to let the jury see it too.

it is supposed to be one of the most protected addresses in the world, now the white house has a new security challenge that the secret service must face after several high-profile missteps eover the last year. the potential threat from drones. turns out the act si has been quietly strategizing while the rest of us are sleeping. we get more from nbc's peter alexander. >> reporter: for the last several weeks around washington the secret service has been testing the defeat of an unmanned drone. after a frightening episode last january when this drone crashed on white house property triggering a lockdown. >> you have now a device that can transport both the surveillance technology and explosives that's commercially available. >> reporter: details of the tests are classified but experts say these are the best options. if a rogue drone zeros in on the white house, they can shoot it down but risk detonating an explosive or hitting people. the most complicated defense,

hijacking the drone. this experiment conducted by researchers at the university of texas shows how they hacked a drone's gps, forcing it to the ground. >> i think the secret service has a lot on their hands if they're going to protect the white house from threat of even these commercial drones. >> reporter: another challenge in heavily populated washington, d.c. figuring out how to disable a drone without using another device with other frequencies, like car navigation systems, smartphones. >> unless you put up a giant net, there's no foolproof way we'll be able to stop every single drone someone comes up. >> reporter: no word how long the secretive tests will last as they try to prevent a midair intruder. peter alexander, nbc news washington. we want to update you on the condition of the u.s. ambassador viciously attacked in south korea. he's now out of the hospital. five days ago an attacker yelling about korean unification slashed lippert in the face and arm.

lippert had 80 stitches in his face before he was discharged. he has more rehab to do but was upbeat about his recovery. >> i feel pretty darn good. all things considered. i mean it was obviously a scary incident. but i'm walking, talking, holding my baby you know, hugging my wife. so i just feel really good. >> questions remain how the attacker got so close to lippert. he had only one full-time bodyguard assigned to him who was unarmed at the time. south korea's campital has been considered a low threat. two helicopters collided in midair killing ten people. the two pilots and eight french nationals, including three of the most prominent athletes. both choppers were part of a tv survival show shot in western argentina. the cause of the crash is not yet known but the french are opening a manslaughter

investigation into the accident. now to an nbc news investigation. the tsa today said it is considering a new range of measures to stop the wrong people from getting into high security areas. but at our nation's busiest airport, hundreds of i.d. badges the ones that grant access to those areas, are already missing. scott friedman from our nbc station kxas in dallas has the report. >> reporter: at airports across the country, thousands of workers use i.d.s that let them in through a side door skipping security. now an investigation finds hundreds of those i.d.s have gone missing. >> because of your employment you are in a very very critical position that can mean the life safety of individuals, or aircraft our nation. >> reporter: nbc news requested records fr some of the nation's largest airports. atlanta sent us this letter saying more than 1,400 i.d.s were lost or stolen over approximately tw

before we could get the numbers from other airports like dallas-ft. worth, the transportation security administration stepped in and said, we couldn't have t the tsa says it's security sensitive. but police reports from dfw airport show crew uniforms go missing, too. even a federal flight deck officer's credentials and badge. >> every employee that receives a badge is required to report if that badge is either lost or . at that point, it's immediately deactivated. >> reporter: still, some security officials fear bad guys with stolen i.d.s could sneak in and open perimeter gate or hop a fence and may be less likely to stand out on the tarmac. atlanta airport officials say missing badges do not pose a significant security threat. because i.d.s have employee photos and require a p.i.n. to get in. the tsa is conducting a nationwide review looking for ways to make them

which might include i.d. checks to help protect the more than 600 million who fly each year. scott friedman nbc news dallas. over the last fou days many of us have finally felt this brutal winter start to give way. there are huge reminders of it washing up on the beaches of cape cod. take a look at these massive hunks of ice and snow some of it bigger than buicks now rest on the sand. they form out in the cold open water, and are brought in by the tide. but these warmer temperatures are already star. still ahead tonight, the moment every parent fears, a stranger steals a toddler and runs off, his attempted getaway caught on tape. the verdict is in on a trial over one of the biggest hit songs of the d introducing aleve pm... the pm pain reliever. that dares to work all the way until... [birds chirping]

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no parent ever wants to think it could happen to their child, an abduction in broad daylight from a place many people with consider perfectly safe. in washington state tonight, police are hunting for a suspected kidnapper who might have gotten away if it wasn't for the victim's siblings and it was caught on tape. we get more from nbc's joe fryer. >> reporter: surveil video from a smalltown grocery store captures the heart-pounding moments. a suspect running away with 22-month-old owen. ten seconds later, the boy's 8-year-old sister is seen sprinting after them then the boy's brother pushing the

stroller in which owen had been sitting when he was taken. dorothy saw owen's sister running and screamer. >> i'm holding her trying to find out -- he said he went thataway. >> a man grabbed a 2-year-old baby child and was running with it. >> reporter: after others joined the chase, the suspect put owen down and kept running. the boy is now safe with his parents. >> your daughter got some lungs. i think there's no one in that town that didn't hear her. >> the little girl did what she was supposed to do which is run after him, yell scream and draw attention to herself. >> reporter: the three kids had been staying with a babysitter. deputies say they were playing in the park unattended when the suspect, a stranger started talking with the kids before grabbing owe >> he was like i'm 19 years old, and i watch kids all the time. >> it looks to me like a random act of trying to abduct a little boy. >> reporter: stranger abductions

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fast food as we know it may never be the same. there are reports tonight that mcdonald's is thinking about adding kale to menu items this year. perhaps in salads or even smoothies. while competitor burger king has quietly removed soft drinks from the kids' menus and kids' meals. restaurants are facing increasing competition with chains like chipotle. the big one hitting, increasing considerably. the u.s. geological survey said there is now a 7% chance of an earthquake with a magnitude 8 or higher hitting california in the next 30 years. that's up from a 40.7% chance in the previous survey in 2008. when we come back by day, he's a new jersey mayor. by night, a hero to chil. in one of the most dangerous places t of wheels, then... wham! a minivan t-bones you. guess what: your insurance company will only give you 37-thousand to replace it. "depreciation" they claim.

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>> reporter: from all appearances he seems to be your average american family man, raising young children. a hard-working school administrator, for ten years he's also been part-time mayor of tiny prospect park new jersey. but mayor muhammad leads a double life that takes him to one of the most dangerous places in the world. you heard the cries all the wa >> i could relate with the people particularly the children. >> reporter: he was himself a small child when his family immigrated to america from aleppo. from that war zone he's gone back five times in three years, discovering the struggle to survive aerial bombs has driven some of aleppo's children undergroun >> this area we're going down to is designed to be a bomb shelter. >> reporter: in a cellar these girls are studying english despite poor ventilation.

>> one of the girls, she said they could bomb us as much as they want. we will continue to pursue our ed >> reporter: it was seeing how much the children wanted to learn, despite war, hunger and the winter cold that convinced the mayor to start a foundation using social media to raise $300,000 so far, supplying a growing network of underground schools, despite his own risk hoping more of us will care about the suffering of aleppo's children. >> when you see the smile on a child's face that's what it's about to me. you know? making a difference in the lives of those who nobody else cares about. >> some people would say you're a hero. what would you say? >> i'm just a servant with a purpose. >> reporter: a servant keeping hope alive for the future of syria. ann curry for nbc news, prospect park, new jersey. and that will do it for us on this tuesday night. i'm lester holt. thank you for joining us. and by the way, we know you

can't always be with us at this time that's why we're always available on demand. have a good night, eve new video, bobbi kristina, shattered boyfriend falling down drunk before his explosive tv interview. >> i've dr. phil today. what he was agrade nick gordon might do, now on "extra."

hyperventilating. >> i thought he could be dead in a matter of days. >> try to get yourself cleaned up. >> the nick gordon interview everyone is waiting for. it was even worse off camera. >> he was high as a kite. >> dr. phil on the moments you won't see. >> bachelor chris and his new fiancee whitney. >> let's see the ring. >> their first interview after the proposer proposal. >> are we talking about kids already. >> nick versus mariah. is their divorce turning ugly. >> one is suing the over over a sneaky $9 million deal. >> "house of cards" star robin wright in the new vanity fair and. >> the real reason she cut off her hair for the she. >> chop it off. >> plus the queen of england. >> it is a fun, sexy ride. >> now on "extra" from universal studios, hollywood, the entertainment capital of l.a. >> hey everybody, welcome to