tonight the desperate search for survivors in morocco after a powerful earthquake kills more than 2100 people. terrifying new video of the moment the 6.8 magnitude quake hit, people fleeing for

their lives, debris falling. now the race to save those trapped. we'll take you to the epicenter and the moment these rescuers saved a life. new images of that escaped killer in pennsylvania, his appearance dramatically changed. the van he stole then abandoned and why he went to a former co-worker's house. our reporter pressing officials on how he keeps getting away. >> reporter: you have 400 officers within this perimeter. how do you explain that? >> reporter: hurricane lee just upgraded to a category 3 storm. will it impact new england? bombshell revelations from the secret service agent who was with president kennedy when he was assassinated. why his words could challenge the long held theory of just one lone gunman. new ai technology in schools. how it promises to detect a gun before shots are fired. and coco the champion. our interview with the 19-year-old tennis phenom after her epic u.s. open win. >> to achieve this

dream that i've had since i was little is a moment i am forever grateful for. >> announcer: this is "nbc nightly news" with kate snow. good evening everyone. the situation in morocco tonight is simply devastating. we're getting new images now showing the extent of the destruction from the powerful earthquake friday night. entire towns are leveled. the death toll now tops more than 2,100, a staggering number. rescuers today were digging through rubble to find survivors. but the hardest hit areas are still extremely difficult to reach. we're hearing more about the terrifying power of the quake. this is new video of a wedding suddenly interrupted. morocco is a popular tourist destination, and today president biden said the state department is working to make sure american citizens are safe

there. we have two reports tonight beginning with raf sanchez on the ground. >> reporter: tonight new images of the moment this 6.8 magnitude earthquake tore through the city of marrakech. >> oh, my gosh. >> reporter: at a roof top restaurant, tourists running for their lives. >> it's passing t's passing. >> reporter: this person fleeing as rubble crashes around them. others escaping through alleyways. the death toll today rising above 2100, and 48 hours after the quake the desperate search for survivors is now in a critical phase. bringing moments of breathless joy as some are pulled to safety. but also heart break when the rescuers arrived too late. we traveled up a winding mountain road, blocked in places by boulders, to reach the

village. we are standing in front of all that is left of what was once the village shrine. in the rubble and debris in front of it are these little reminders of people's shattered lives, including their mail and bills. locals say 40 people died here. more than 1% of the entire community. among them? his three daughters, baby son, and wife. >> translator: i'm all alone now, he says. i had a home and a family. now i have nothing. and across morocco in small villages and major cities, families sleeping on the streets. worried that after shocks could still bring their homes crashing down. a nation struggling first to rescue, then recover and rebuild. >> joining us now from marrakech, have moroccan authorities said how long they'll continue rescue

efforts? >> reporter: they're not putting a deadline on it, kate. rescue efforts say the first 72 hours after a disaster are absolutely critical. we are now exactly 48 hours since the earthquake. and so the coming day may be the last best chance for finding survivors. >> let's hope. raf, thank you. the earthquake was centered as we mentioned in a hard to reach, extremely vulnerable part of morocco. stewart ramsey from our partner sky news made it to the epicenter and filed this report. >> reporter: they've been dig hearing for quite a few hours now. we've been with them. they've had to go through what is basically the ceiling of the building that has collapsed down. they are pretty certain there is another body in here. they've pulled out a few people today. no survivors. at this point it seems in this particular street, as you can see, has completely disappeared, that some did get out when the

earthquake struck. some say it was more like an explosion than a shake. it went whoosh. if you got out there was a chance you got away from the buildings. if you look along here, it is very sad but these are the family members who have come to watch this event, which is the rescues taking bodies out. rescue workers say they'll continue their hunt for survivor but say as every hour and every day goes by the chances of finding anyone who survived this catastrophic earthquake gets less and less. kate? >> thank you for that report. back here in the u.s., there are multiple major developments in the manhunt for the convicted killer who escaped a pennsylvania prison. new photos show him even further from where he escaped and looking a lot different. george solis has the latest. >> reporter: tonight the pennsylvania man hunt intensifying for escaped killer danelo

cavalante, the desperate search now nationwide, after he slipped past authorities once again, ditching this white van he stole last night. how do you explain that? >> no perimeter is 100% secure ever. i applaud the men and women who were out there standing in some very difficult conditions and tried to secure that perimeter. i'm not going to make an excuse to you. i wish it had not happened. >> reporter: police worried about what cavalante, convicted this summer for the brutal murder of his ex-girlfriend, may do next. >> we are obviously very concerned cavalante has or will attempt to steal another vehicle to facilitate his escape. >> reporter: today a major clue. authorities releasing these new door bell camera photos of cavalante taken at the home of a former co-worker where the fugitive may have been looking for help. here is what he looked like before. and now you can see he has drastically changed his appearance. now clean shaven, wearing a green or yellow hooded sweatshirt, hat, green pants, and white sneakers.

this map showing cavalante's movements since his escape at the chester county prison just outside philadelphia 11 days ago to these sightings at the botanical gardens, all the way to his last known location where the van was recovered today. >> this is a minor setback. we'll get him. it's a matter of time. >> reporter: over the course of the man hunt some 400 officers from local, state, and federal agencies scoured an ever changing perimeter around the garden's property. >> there are a lot of issues associated with that property. you couple that with weather, aviation being down for a night, there are a number of reasons. again, no excuses. >> george joins me from outside the command post in chester county. do authorities still believe the fugitive is in pennsylvania at this point? >> reporter: they do, kate. police here at this command center say this moving target presents a new challenge. their goal now to capture cavalante before he crosses state lines. kate? >> george, i know you'll stay on it. thank you. we've got an update on hurricane lee tonight. it just strengthened back to a category 3

storm out in the atlantic. it is expected to develop into a category 4 tomorrow and then turn north by wednesday. you can see the various long-term models here. a few of those lines have lee heading toward new england but most have it missing the u.s., possibly hitting canada. right now lee is causing dangerous surf and rip currents along the east coast. those will linger throughout the week. one of the happiest stories now is in vietnam tonight, striking a deal with that key ally, the goal to strengthen u.s. ties with south asia right on china's door step. janis mackey frayer is traveling with the president for us. >> reporter: kate, this upgraded relationship with vietnam is a status hanoi has not given many countries. the biden administration sees this as a significant tactical step toward counterbalancing china's influence. at his news conference president biden said it is about stability, that he doesn't want to contain china. it is just about having a relationship

that is on the up and up. he didn't actually criticize china's president xi jinping. now, this new status with vietnam is mostly symbolic. it is to help investment including defense contractors and american companies with production here. but it's also about sending a clear message to china and to russia that american ties to vietnam on china's door step are now closer than ever before. kate? >> thank you. one of the happiest stories this weekend? coco mania after 19-year-old coco gauff won the u.s. open. we spoke with her one-on-one about her incredible win and what we can expect next. >> reporter: it was a milestone moment fans will never forget. the crowd going wild as 19-year-old coco gauff took the u.s. open women's crown, the youngest since her idol serena williams in 1999.

>> hello. >> hi. >> congratulations. >> reporter: i spoke to gauff after the match. >> to have my name on this trophy with hers is a dream that i always dreamed and believed in but, you know, i guess when you accomplish something so crazy it doesn't feel real. >> reporter: gauff's victory igniting a fire in the world of tennis. to her fans, she represents the best of the sport's future. >> she is so young and really there already. >> i love how determined she is. she is just a strong force. >> she's young. she's bringing women's tennis back. >> reporter: celebrity fans sending well wishes, too, former first lady michelle obama posting, this is your moment. tennis legend roger federer saying, inspirational win. and this instagram post from serena, amazing. gauff telling me just how much the crowd here inspired her. >> that roar on match point was really loud. i'm grateful for every single person that believed in me and supported me. >> reporter: her grand slam title started

with a dream. this video of an 8-year-old coco at the u.s. open resurfacing overnight. one fan declaring, she was always a star. a star shining for this moment in history, determined to rise toward an even brighter future. aaron gilchrist, nbc news, new york. still ahead tonight the bombshell revelations raising new questions about revelations raising new questions about john f. kennedy's i was stuck. unresolved depression symptoms were in my way. i needed more from my antidepressant. vraylar helped give it a lift. adding vraylar to an antidepressant... ...is clinically proven to help relieve overall depression symptoms... ...better than an antidepressant alone. and in vraylar clinical studies, most saw no substantial impact on weight. elderly dementia patients have increased risk of death or stroke. report unusual changes in behavior or suicidal thoughts. antidepressants can increase these

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we are back with a new twist surrounding president john f. kennedy's assassination. a secret service agent who was there that day is now speaking out and raising new questions. liz kreutz has the details. >> reporter: 60 years after one of the most earth shattering days in modern american history, when president john f. kennedy was assassinated in dallas in 1963. >> president john f. kennedy died at approximately 1:00 central standard time. >> reporter: tonight former secret service agent paul landis who was with the president that day is opening up for the first time about what he witnessed. for decades the prevailing theory was that one bullet struck jfk and then hit texas governor john connolly who was sitting in front of him. it became known as the magic bullet theory which explained how one shooter could have fired all the shots. the theory is based on

this bullet being found on governor connolly's gurney at the hospital. but now in a new book, landis says he knows how it got there. the 88-year-old tells the "new york times" he found the bullet lodged in the car seat behind where kennedy was killed. he says he then took that bullet to the hospital and placed it on the president's gurney. it was a piece of evidence, he tells "the times" and i didn't want it to disappear or get lost. so it was, paul, you've got to make a decision, and i grabbed it. but landis now says he thinks the bullet may have rolled from kennedy's gurney to connolly's, meaning it may not have been the bullet that injured connolly. >> dr. aguilar you studied this case for years. how significant is this? >> i think this is a significant piece of new evidence to support the idea there was more than one gunman. >> reporter: clint hill the secret service agent who climbed on the back of the limo after kennedy was shot, questions landis' story. why do you have doubts about his account? >> because if you

check all the evidence, the statements, things that happened, they don't line up. it doesn't make any sense to me that he's trying to put it on the president's gurney. >> reporter: but landis, who was not available for an interview with nbc news, tells "the times" he made mistakes in his initial reports. he says he has been afraid to share his true story until now. kate? >> liz kreutz, thank you. we are back in a moment with the future of school safety. moment with the future of school safety. how so ♪♪ me when you have chronic kidney disease... there are places you'd like to be. like here. and here. not so much here. if you have chronic kidney disease, farxiga can help you keep living life. ♪ farxiga ♪ and farxiga reduces the risk of kidney failure, which can lead to dialysis. farxiga can cause serious side effects including dehydration, urinary tract or genital yeast infections in women and men, and low blood sugar. ketoacidosis is a serious side effect

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unsolicited kiss he gave a player last month. spanish authorities launched a criminal investigation. we have dramatic new video tonight after a skateboarding event in los angeles saturday night turned chaotic. you can see massive crowds here with people swarming near a car that is engulfed in flames. the lapd said about 1500 skateboarders were there and the police used riot gear to clear the scene. there were no injuries reported. now to our series ai revolution. and a growing push to use artificial intelligence to keep kids safe. some schools across the country now using new technology to boost security and try to prevent shootings. >> reporter: at this regional high school in new jersey, there's more to these cameras than meets the eye. this school is one of hundreds across the country now using zero eyes, a human verified artificial intelligence system designed to detect guns and combat mass

shootings. here's how it works. it uses existing security cameras, coupled with the company's ai, trained to detect guns, plus a team of military experts working around the clock to alert authorities before any shots are fired. critical because according to the fbi, 60% of active shooter events end before police arrive. rob huberty co-founded zero eyes. >> you can't watch all the cameras all the time so we are watching behind the scenes for you. >> reporter: the zero eyes team demonstrated their technology using fake guns in an empty part of the school before students returned from summer break. >> we have a true positive detection. >> copy local law enforcement is enroute. >> reporter: we also had a camera at their pennsylvania operations center so you could see how they respond at the same time. >> zero eyes operation center. >> reporter: look at this. the man on screen is only in the school's

side door for a few seconds. and screen right the moment his fake gun is revealed, the zero eyes ai detects it. this image is displayed on the operator's monitor. that's when the team springs into action. first with those trained experts verifying the threat. >> true positive. >> dispatch alert. >> dispatching alert. >> reporter: then immediately alerting school security and police with phone calls and texts. >> getting more alerts since we're doing this. >> reporter: and it all happened before the shooter could even get in the hallway to fire a shot. >> you can follow this person with the gun throughout the school wherever there is a camera? >> as long as their gun is brandished. >> reporter: it is not fool proof. the technology cannot detect guns that are hidden or anywhere without a camera. then what do you do? >> good security comes in layers. i think we can really help in certain situations, absolutely. but are we the end all be all? no. >> reporter: for this school superintendent,

every extra layer of protection is critical. does it make you sleep a little easier at night knowing what the next day might bring if you are secure? >> absolutely. the first thing we think about as superintendents, administrators, is safety and security. >> reporter: with the technology has applications beyond just education. it looks like i'm at another school right now, but actually i'm in front of a green screen that is used to train the ai to recognize guns in school environments. it can also be used in other settings like a mall, public transit, even a casino. back at the high school, teachers say the zero eye services are worth the cost which can run up to $50 per camera per month >> i think anything that is going to save lives is always worth it. >> reporter: as classes start across the country, added security and more peace of mind. nbc news, pennsylvania. when we come back,

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there is good news on this first nfl sunday of the season about hard work paying off and the college football players who got the surprise of their lives. for college football teams across the country it's been a season of surprises and celebrations. hard working players, many walk ones, finding out in so many different ways that they finally earned full scholarships. >> where is garrison? somebody delivered this for you. >> reporter: auburn

defensive lineman garrison walker was handed this note from his coach. it read, congratulations, you are on scholarship. >> you are on scholarship. >> and lobbed it downfield to jake, who streaks in for a touchdown. >> reporter: at the university of pittsburgh that is the panthers wide receiver junior learning he also got a scholarship. it's a dream come true for jake after losing his dad, malcolm, three years ago. >> he's always guiding me. you know, i definitely think he'd be proud. >> reporter: and this was no ordinary team meeting for the long island university sharks. >> face time. >> reporter: that is head coach ron cooper calling the mother of tight end reese dykstra. >> is that reese's mom? >> it is. >> oh, you're calling to do what? >> i'm a little concerned.

>> he's doing great. we're going to pay for the rest of his school. you have no more bills. [cheers and applause] >> reporter: overwhelmed with emotion. >> you know, i wake up more and more blessed each and every day. it's just great. you know, every kid dreams of it. and luckily for me it happened. you know? >> reese has earned it. it isn't anything that's given. >> reporter: a moment mom kim says she'll never forget. >> looking at reese's face, i'm his mama. i know him. i just felt such a sense of grand relief and validation for him, pride. just seeing the players and the coaches celebrate and honor reese, it was just overwhelming. >> if that got you excited for some football, don't go anywhere. "football night in america" starts right now with the dallas cowboys facing off

against the new york giants. that's "nightly news" on this sunday night. i'm kate snow for all of us here at nbc news. stay safe. have a great night. xxxx

it's a world record again!