on this thursday night, breaking news. new video from that fatal encounter in south carolina, what the police dash cam video shows. walter scott pulled over and questioned, then jumping out of the car and running away. tonight, what the tape reveals and the questions that remain. also our nbc exclusive, the witness that reported that shooting comes together with the victim's family. tonight, the police officer's mother speaks out for the first time. violent storms tearing across the country. tornadoes, hail and lightning strikes, exploding power lines. tonight, 95 million americans in the storm zone. and call for help. sandra bullock wakes up to an intruder loose in her home. tonight, the chilling 911 call while hiding in her closet. "nightly news" begins right now.

from nbc news world headquarters in new york, this is "nbc nightly news." reporting tonight, lester holt. good evening. there's video showing the start of what would become a fatal encounter between a north charleston south carolina policeman, and the motorist h of murderi. shows a ro traffic stop walt over for a taillight. officer approaches the car. there's brief conversation about whose car it is. scott seems to say he is purchasing it. the officer returns to his car to apparently check on scott's driver's license. at one point, scott starts to exit the car, but complies when told to stay ins exit the car, but come plies when told to then watch what's about to happen. >> but it is the other

tape, the one seen around the world of slager minutes later shooting an and fleeing scott in the back that's turned this into a murder case. we will show you exclusively an emotional meeting between the young man that videoed the shooting and walter scott's family. first, starts us from north charleston with other new developments of the day. gabe? >> reporter: lester, good evening. in a case where video has already been so crucial, this new dash cam footage fills in some of the gaps but doesn't answer the central question, why the shooting. the dash cam video shows officer slager approaching the car walter scott is driving. >> can i see your license, registration, >> reporte talk. zblt reason for the stop is your brake light's out. >> reporter: scott is missing some paperwork, squad car. >> gotta stay in the car. >> reporter: a mi takes off running, b

shooting, leaving unanswered questions about what led tth deadly confron >> not going to be a game changer in terms of finding out what happened because we still have time that's unaccounted for. >> reporter: north charleston police are facing tough actions about their actions after saturday's shooting. according to the incident report multiple officers witnessed other officers providing first aid. one describes applying pressure to the gunshot wound. another assisted with first aid and cpr to the driver. a third reports seeing someone administering chest compressions. in part of the cell phone video, officers are seen attending to scott, but he remains on his stomach and no chest compressions are seen. it is also unclear how soon that happened after the shooting because of a break in the recording. >> what i saw was them removing the shirt and

performing some life-saving. i am not sure what took place. >> reporter: zaden santana, the man who recorded that said he was surprised medical attention took so long. >> i would think he would turn his face so he can breathe if he was alive. >> he remained face down. >> yeah. >> reporter: officer slager has been charged with murder hasn't entered a plea. his mother spoke for the first time. >> one mother to another mother i can understand this so i just want them to know i'm sorry that this happened. and that this has made a change in everybody's life. >> reporter: the officer's mother says she has not spoken to her son since the incident and she has not even seen the video. police here now say they'll begin reviewing that separate incident from 2013. lester? >> thank you. if not for the witness who recorded that on his cell phone, some were asking would the

officer ever have been charged and what would the family walter scott have known late today, that witness and that family cam nbc's crai there, he joins us from charlesto meetin it was sad and po. 23-year-old zaden santana, the young man that too phone vi scott bein fi know precisely how was their loved one died. behind me a short time ago, an emotional reunion. >> this is santana. zaden santana. >> oh, thank you, god. thank you, lord. thank you, god. thank you. thank you, god. thank you. thank you.

>> thank god for you. thank god for you. >> does this help put y'all at peace? >> glory, hallelujah. >> want to say thank you. i don't know how this would have turned out without the video. i just want to thank you. i don't know how much i could thank you more. i just really, i'm appreciative, i'm grateful. i'm so glad that you had enough courage to turn that video in. from the bottom of my heart, really, thank you for doing that. >> for myself, the person, and them and the family, i guess if i would have been in that situation, maybe they were the ones who witnessed this, i am sure they would look for justice also. >> thank you god. >> reporter: santana is from the dominican republic.

folks behind me say he now has family in north charleston as well. also today the family announced they plan to file a civil lawsuit against nort ton police department. lester? >> what a remarkable moment. thank you. tonight, we continue to monitor a major outbreak of severe weather. 95 mil in the threat zone this evening and into tomorrow, stretching from the great lakes down to texas. at least one tornado reported already today as several states get pommelled by hail and winds up to 70 miles per hour. nbc's national correspondent migel almaguer is in east st. louis, illinois, where they're bracing. good evening. >> reporter: good evening. with warm temperatures, whipping winds, ominous skies, the concern tonight is going to be tornadoes. it appears one may have already touched down. the next 12 hours could be a wild ride. tonight, this is what millions of americans

in at least five states are bracing for. baseball sized hail, smashing out windows. >> it sounded like fireworks, like grand finale fireworks. >> it was a little spooky, was a little too close for comfort. >> reporter: 70 miles per hour winds, powerful this semi was toppled in indiana. flood waters rose without warning. tonight, a mess in missouri. >> all of a sudden it came up, my '57 ch that's my gem. hopefully it will clean up. >> reporter: sever states h indiana, k ke outside pounding r lightning. one bolt bringin power lines, causing a fire caught on das cam. in parts of missouri the night sky was electrifying. a plane bound for denver struck by lightning, leaving a gaping hole in the nose. funnel clouds spotted over the midwest

including this one with a rainbow in kansas. outside st. louis today the debris field is as scattered as the weather. downed trees, roofs ripped off, and power still out. in potosi, missouri, people said they could feel the storm coming. >> you could hear noise up top, there was a pressure change. >> reporter: tonight, more dangerous wea is closing in. as is often the case with tornadoes, the weather this evening will be unpredictable. they're asking tens of millions to listen to local warnings and heed them. as for those already hit with damage, they could once again be in the bullseye. lester? >> thank you, meteorologist dylan dreyer is in the studio with us. where should we be focused? >> several tornado watches are in effect including chicago and st. louis. we have seen it in southeastern ohio and northern west virginia. these storms are firing up

ahead of a cold front that will move east. sets up across the great lakes tomorrow morning and the east coast into friday evening. we are looking for widespread, storms wit likely, anywhere from texas up into the southern great lakes. we could also see heavy downpours, dangerous cloud to ground lightning, wind gusts near 75 miles per hour, and hail two to three inches in diameter. we are looking for threat of severe storms friday, too, but they will not be as severe as today. we still could see an isolated tornado, but there's a much less chance of that, and the whole storm system, lester, is gone by the time we get to the weekend. >> dylan dreyer, thanks very much. history could be made as early as tomorrow in panama when president obama finds himself face to face with cuba's leader the first time since the two countries decided to improve relations, but ahead of their arrival in panama, violence is erupting in the street nbc senior white house correspondent kris jansing has more. >> reporter: chaos, ahead of the long awaited summit of the americas. fists flying. about 100 supporters

of the castro regime heckled cuban exiles from miami. >> change is hard. >> reporter: followi president obama' decision to rest diplomat cuba, he called raul castro, they met briefly a year earlier. the two coming face to face to talk detante after decades of cold war era animosity will be the most watched part of the summit. >> do they sit down and have substanti a me want list o sponsor terrorism. >> i won't make a formal announcement today. >> expected to drop the terror designation as soon as tomorrow. first, a visit to a museum, dedicated to bob marley in jamaica. >> big fan since i was in high school. >> reporter: a low key moment ahead of a . kris jansing, nbc news, panama city, panama. the secret service faces another in a long line of scandals,

a high ranking supervisor with allegations of assault, raising questions about whether they can clean up its act witho bringing in an outside authority. kristen welker has more. >> reporter: he was a stand out, a senior supervisor recently promoted. now he is the face of the latest secret service scandal, accused of assaulting a female agent. >> it seems like déjà vu all over again. >> reporter: government sources say at t the female a alleges morales, her boss, propositione her here and at headquarters tried to get physical. she says she fought him off. >> reporter: joseph clancy placed him on leave, saying any threat endangers our workplace l not be tolerated. clancy was tapped to lead the agency after a series of

embarrassments, including a man with a knife making it into the white house, then last month on clancy's watch, surveillance video showed them going through a barricade after a night of drinking. >> it is going to take time to change some of this culture. >> reporter: an official review board concluded an outsider was needed to re . the president picked clancy, a 27 year secret service veteran. lawmakers st behind him stressing the urgency. >> i would say to director clancy, we have to move even faster, the president's life he for comment, got no security and d.c. police sex crimes unit are investigating. lester? >> thank you. new developments in the murder case against wealthy release heir robert durst. he may be trying to communicate to the outside world with a handwritten letter from behind bars. stephanie gosk has the story. >> reporter: robert

durst spoke publicly for the first time since his arrest, pleading not guilty to two weapons charges in a new orleans courtroom today. the charges are slowing down his extradition to los angeles for the murder of susan berman, held to the public through the mail. los angeles times reporter molly hen see fisk received a le wi fo it was signed simply bob. >> i had writt him, open ended letter saying if there's anything you would like to say, feel fr to write back. >> reporter: it is written in sloping cursive. sharing an array of personal details. while living in l.a. the author writes i loved watching the traffic come up and mush into santa monica. my interests are opera and pro-football. the author says he suffers from full blown hydrocephalus, a

condition that leads to fluid buildup in the brain. then concl said nothi charges, if any of this gets published, please durst's attorney didn't confirm authenticity of the letter, but says he doesn't mind who his te long as he doesn't discuss the case. stephanie gosk, nbc news, new york. there's a lot more ahead tonight. an intruder in the home of one of the world's biggest movie stars. we hear her call for help as she hides in a closet. also, good news, the sweet surprise hidden in a cake for this expecting mom who already has six boys, and her priceless . has six boys and her priceless i'm louis, and i quit smoking with chantix. i told myself for so long that i needed to quit smoking. i would quit then i'd go right back to it. chantix absolutely helped me quit smoking. along with support, chantix (varenicline) is proven to help people quit smoking. chantix helped reduce my urge to smoke. some people had changes in behavior, thinking or mood hostility, agitation, depressed mood and suicidal thoughts

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we are back with a chilling 911 call for help made by oscar winner sandra bullock, woken by sounds of an intruder inside her home, and hiding in her closet waiting for police to arrive. nbc's joe frier takes us through it. >> reporter: an emotional 911 call from sandra bullock was the first piece of evidence presented today during a hearing for the man accused of stalking the actress and making into her home. >> i'm in my closet. i have a safe door . >> corbett, force way in locked glass door. bullock's

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finally tonight, the palace has revealed new detai about the impending birth of prince george's little brother including the fact that william and kate have chosen not to find out the sex of the baby until it arrives. it probably will not be on camera, unlike one that went viral. her reaction, priceless. >> reporter: a mom who already had six boys is about to learn the gender of her seventh child. blue for boy, pink for girl. but that's not what the cake says. >> you can't have a boy every time. >> you really can. that's how we were just the boy people. now we are the boy people p >> reporter: remember when everyone tried to outdo each other w videos of the best marriage proposals? now it is videos showing moms learning the gend baby. >> now that most couples are fi out what they're

having, it is taking away excitement at the hospital. why not make it into a party and celebration. >> reporter: cutting a cake is old school. now there's confetti thrown by the family, confetti out of a cannon, balloons out of a box, fireworks, oh, and this. >> show us which car you're in, lauren! >> i think it is a boy. >> rep reveal doesn't always go so well. >> y girl. >> oh. >> i hate boys! >> reporter: sometimes it is safer to wait for the surprise on delivery day, but th audience, kate snow, nbc news. >> great stuff. that does it for us. for all of us at nbc news, thank you for watching and good night. you for watching and good night.

we have breaking news an active shooting investigation right now at lights, camera, access. >> you look beautiful today, miss taylor. >> seriously, what did she say to you? what did she do right to make you turn out like that? >> thank you for saying that. >> she shared so much about her wonderful mom over the years. i'm billy bush.