where people are being harassed and intimidated. >> reporter: in this case, the suspects involved face up to 20 years behind bars if convicted. u.s. officials tell us that china poses the most serious threat to u.s. national security. norah. >> jeff pegues, thank you. let's turn now to that blockbuster trial against fox news for defamation that is set to begin tomorrow in a delaware courtroom unless there's a last-minute settlement. dominion voting systems is suing fox for $1.6 billion in damages for reporting baseless allegations about the company following the 2020 election. cbs's scott macfarlane is outside the courthouse. >> reporter: the cable giant's biggest stars plus fox corporation chair rupert murdoch could take the stand this week as the company battles a defamation lawsuit filed by dominion voting systems. >> whether it's dominion, evs, whatever the company -- voting machine company is. >> reporter: the lawsuit alleges

the network knowinglyoting 20 election in favor of then-candidate joe biden. >> what our next guest says is evidence of voter fraud. sidney powell. >> reporter: -- as fox hosts and their frequent guests, trump lawyer sidney powell and rudy giuliani aired false claims following the election. text messages show tucker carlson saying powell is lying and laura ingraham saying that sidney is a complete nut. >> i think it could be very damaging to fox's stars or to fox's big-name executives, including and especially the murdochs, to have to testify. >> reporter: dominion's lawyers will argue fox was worried about losing viewership and purposely let the false fraud claims continue on-air. but proving defamation requires overwhelming evidence. >> what you're dealing with is a high bar, and it should be a high bar for the simple reason that we want freedom of the press. >> reporter: a final round of jury selection is set for

tomorrow morning followed by opening statements unless there is a last-minute settlement. norah. >> scott macfarlane, thank you. we want to turn now to three americans missing at sea for nearly two weeks. a desperate search is under way by the mexican navy and u.s. coast guard. cbs's elise preston has new details in the international effort to find them. >> reporter: loved ones of carrie and frank o'brien and their friend william gross are desperate to hear from the three missing sailors. >> it's agony, pure agony. i'm trying to hold myself together. >> reporter: ellen says her daughter and son-in-law have sailed together for nearly 20 years and are both licensed captains. they asked gross, who has 50 years experience, to journey with them. it's been nearly two weeks since the americans left mazatlan. they made calls that same day requesting a stop in cabo san lucas for food and fuel, their last known communication. the trio was supposed to reach

cabo on april 6th and continue on to san diego but never made it. the search area now is 2,500 square miles. >> it's a good conditions. >> reporter: rough seas and high winds may have been a factor, and the couple's 44-foot sailboat oceanbound has older navigational equipment. still, o'brien's mother is hopeful. >> she's a survivor, and she's physically strong. if anybody can survive this, they can. >> reporter: now, there is a travel warning for tourists in this region. o'brien's mother tells cbs news the couple docked their boat in mazatlan and sailed there many times. norah. >> elise preston, thank you very much. tonight the biden administration is urging americans trapped in the african nation of sudan to shelter in place as there are no plans right now for a u.s. government evacuation from that country. all u.s. personnel are said to be safe and accounted for. three days of fighting between

sudan's army and a paramilitary force have left nearly 200 people dead and more than 1,800 wounded. the "cbs overnight news" will be right back. your new axe fine fragrance body wash, sir. it's the g.o.a.t. ♪♪

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across the united states, there is a potential new high-tech line of defense to help protect schools and other public places from future mass shootings. cbs's manuel bojorquez shows us how artificial intelligence could provide an early warning system when every second counts. >> reporter: miami's frost museum of science is using artificial intelligence to try to keep visitors safe. >> it monitors all the cameras. >> reporter: brooks wise blatt is vp for technology. >> every tool helps. every second counts, you know. anything that we can do to further protect the community and our visitors and our staff. >> reporter: the technology works with their existing cameras and has been programmed to spot different types of weapons. say my phone were a weapon. the system would immediately alert the entire museum security staff, but also pinpoint my exact location. they could then determine whether it's a police officer, for instance, or an actual threat. the ai technology is developed by a company called b motion.

hussein is its president. >> airports, schools, they're big places. so is it revolutionary to have the ability to have ai do it as opposed to human eyes? >> absolutely. you cannot have millions of people watching cameras all over the world. it's almost impossible. >> reporter: he points to the nashville school shooting as an example. the company claims the simulation shows the weapon being detected once the shooter got in. and during the time the shooter spent near this hallway. >> it would have provided the officers the exact location of that shooter. >> reporter: similar ai programs like the one from company zero eyes are being used in schools, like florida's hernando county school district. the goal would be to get police on the way before a single shot is fired. >> we can be aware, and law enforcement can be responding within seconds where notified. >> reporter: the company b motion says its system can cost

school districts anywhere from $40 to $70 per student, per year. krirtices of ai say it's not foolproof, but the institutions we spoke with say it's another layer of defense. norah. >> really interesting story. manny bojobojorquez, thank you much. well, a new vaccine could be a game-changer in the fight a game-changer in the fight against the deadliest ♪♪ open talenti and raise the jar to gelato made from scratch. raise the jar to flavors from the world's finest ingredients. and now, from jars to bars. new talenti gelato and sorbetto mini bars. ♪♪ some migraine attacks catch you off guard. but for me a stressful day can trigger migraine attacks, too. that's why my go-to is nurtec odt. it's the only migraine medication that can treat and prevent my attacks, all in one. don't take if allergic to nurtec. allergic reactions can occur, even days after using. most common side effects were nausea, indigestion, and stomach pain. now, i'm in control. with nurtec odt, i can treat a migraine attack

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terrorist bombing that killed 3 and injured more than 260 others. among those most severely wounded was dancer adrian has let. for tonight's person to person, we caught up were her to reflect on her journey of healing. adrienne haslet is a runner. she wasn't always, but that's one of the many things that has changed in the last ten years. >> are you still angry? >> i'm angry that people were hurt. i'm angry that he did it, but i don't live in the angry anymore. >> that's a change for you. >> it's a very big change for me, yeah. that's taken some time, and i think, you know, running helps. >> haslet was near the finish line on april 13th, 2013, when two bombs exploded. she lost her left leg. it's hard to believe it has been ten years since the boston marathon bombing. >> i hear you say that, and i want to correct you. it just didn't feel like ten years. >> what lessons have you learned since then? >> gosh. i think i've learned that when someone tells you something can't be done, it's a reflection

of their limitations and not yours. i've learned that on the days you need to be in the fetal position and sob, you should do that. >> the competitive ballroom dancer left the hospital promising to dance again and to run the boston marathon. both goals she accomplished. now her focus is on her mental health and advocating for others. >> i think one of the most valuable lessons i've learned with mental health in all of this is to observe and not absorb. so it's similar to if you're standing at the start line of a race. you're observing everybody else's nervousness, but that's theirs. that's not mine to take on. >> observe but not absorb. >> yeah. >> haslet's road to recovery has had its ups and downs, but since the beginning, she chose to be a survivor instead of a victim. >> i don't think why me, why me, why did this happen to me? >> i think it's about, what am i going to do now? that terrorist only had me for 3.5 seconds. that's how long that blast took to blast through the air. after that, it's been up to me. >> she is the epitome of boston

strong, and you can see more of our interview and hear her incredible story of resilience tonight on the cbs (male) there are many voices in today's world. everyone is voicing their opinions about everything, and jesus is no exception to that. what if there was a clear voice telling you exactly who jesus is? (male announcer) join dr. david jeremiah as he teaches who jesus is and what that means for your life. tune in to dr. jeremiah's new series, "christ above all", on the next "turning point", right here on this station.

in tonight's health watch, a new vaccine is showing promise in the fight against melanoma, the deadliest form of skin cancer. the vaccine used mrna technology, similar to the pfizer and modern na covid vaccines. a study found that after at least two years, patients that received a personalized vaccine along with immunotherapy were 44% less likely to die or grow new tumors. a major bridal store chain has filed for bankruptcy protection. that story is next.

david's bridal, one of the nation's largest sellers of wedding gowns and formal wear is again filing for bankruptcy protection. the company says it will reduce its corporate workforce, but the cuts will not impact store employees. david's bridal says its 300 stores will remain open and orders are being fulfilled, good news for brides. and that's the overnight news for this tuesday. for some of you, the news continues. for others, check back later for "cbs mornings." and remember you can follow us online anytime at cbsnews.com. reporting from here in the nation's capital. i'm norah o'donnell.

this is cbs news flash. i'm shanelle kaul in new york. jailed "wall street journal" reporter evan gershkovich will have an appeal hearing today in russia. he was arrested on espionage charges on march 29th and faces up to 20 years in prison. the state department declared him wrongfully detained. hollywood screenwriters have voted to authorize a strike if a deal cannot be reached with producers before their contract runs out on may 1st. the last writers strike in 2007 cost l.a.'s economy an estimated $2.1 billion. and the late, late show has announced that harry styles and will ferrell will be guests for

james corden's final night as host. that airs on cbs on april 27th. for more, download the cbs news app on your cell phone or connected tv. i'm shanelle kaul, cbs news, new york. >> announcer: this is the "cbs overnight news." we do want to begin with another community in mourning tonight, shattered after a mass shooting at a sweet 16 party. four people were killed. their ages range from 17 to 23. two of them were high school seniors. well, tonight, we speak to the mother of a hometown hero who had just signed to play football in college. at least 28 others were injured, and several are in critical condition when gunfire turned a birthday party into a nightmare in the small town of dadeville, alabama, on saturday. authorities say they have strong leads but have not released anything about a motive or

possible suspects. and it comes as a new cbs news poll shows 77% of parents are concerned about gun violence and as guns have surpassed car accidents as the leading cause of death for children in the u.s. cbs's omar villafranca is going to start us off from outside the scene of the shooting. good evening, omar. >> reporter: good evening. police are still very tight-lipped about this investigation, but the girl who had the sweet 16 party at this venue behind me told me that there were rumors that someone may have had a gun. well, that prompted her mother to stop the party, turn the lights on, and tell everyone inside, if you're over 18 and you have a gun, you need to leave. later that night, the unthinkable happened. >> i'm broken. my heart is just ripped out. >> reporter: the sorrow is almost unbearable for latonya allen. on saturday, she was chaperoning her daughter alexis' sweet 16 birthday party at a small dance studio when shots rang out. >> it was just a disaster.

they were running, hollering, crying, just hollering. >> reporter: in the aftermath, her 18-year-old son, phil dowdell, was on the ground in a pool of blood. the high school senior was set to graduate next month, a star under the friday night lights, dowdell was headed to play football on saturdays for jacksonville state. but this saturday night, number 7 became another number, the latest victim of a mass shooting, with his little sister and mother by his side. >> he was trying to say something. by that time, he couldn't say anything else, and he stopped breathing. >> reporter: another high school senior, 17-year-old shaunkivia smith, was also killed, along with 19-year-old marsiah collins and 23-year-old corbin holston, who reports say did not attend the party but went to check on a younger family member. the community came together at a vigil last night. daeqwan knew phil since kindergarten. >> i was standing right beside

him. i think he went right into it. i wish i could have pulled him out. >> reporter: alexis says her big brother's final act was to protect her from the gunfire. >> you told me your brother grabbed you by the waist and pushed you down. >> uh-huh. >> did your brother save your life? >> yes. if it wasn'or him, i mean i don't know where i'd be. i don't know if i'd still be standing here today. >> reporter: the mother, latonya allen, was also shot twice. she told me she still has a bullet stuck in her side and in her leg. she's going to be fine, but she told me her focus now is on finding the killers and plannin. norah. >> omar villafranca, thank you for being there. there is breaking news out of kansas city, missouri, where the county prosecutor has charged an 85-year-old white man for shooting a black teenager twice, including once in the head. police say the teen went to the

wrong address to pick up his younger brothers. he rang the doorbillion, and moments later, multiple shots were fired. cbs's roxana saberi is outside the police station with these new details. >> do you think if he was a white 16-year-old boy and he rang that door, do you think it would have been the same outcome? >> reporter: ralph yarl's family says the 16-year-old was gunned down after mixing up the address. he was supposed to go to ne 115th terrace but instead rang a doorbell on ne 115th street, just one block away. the yarl family's attorney says ralph waited for a few minutes after ringing the bell before the door opened. >> he was immediately confronted with an armed man, who told him that he did not want to see him on his property again. and then he opened fire. >> reporter: still, yarl's aunt, faith spoonmore, says the teen ran for help, knocking on three more doors before a neighbor called 911. >> as his aunt, what do you

think about that? >> hearing that part of the story is even harder. he was clearly hurt. he was clearly bleeding. he was clearly needing help. >> reporter: ralph is now recovering at home. kansas city mayor quinton lucas says it's hard not to draw that conclusion. >> something like this happening is unimaginable, and it's unbelievable, and it's hard to expect that something like this would happen if ralph weren't black. >> reporter: the shooting sparked protests here on sunday. >> we just want justice. you know, ralph is a good kid. he doesn't deserve what's happening to him. >> reporter: the charges the prosecutor just announced are two felonies against andrew d. lester. one carries a potential life sentence. a warrant has been issued for his arrest, and the prosecutor confirmed what the mayor suspected, that there was a racial component in the incident. norah. >> roxana saberi with those new details. thank you. well, tonight, the justice department is cracking down on

alleged chinese agents right here in the united states. they're accused of intimidating critics of china's government, even setting up a secret police station in new york city. as cbs's jeff pegues reports, that's only one of the alleged schemes to harass dissidents. >> reporter: the secret police station took up an entire floor of this chinatown building in new york city. according to investigators, it was run by the chinese government to track and even harass dissidents living here in the u.s. >> the defendants' actions under the direction of the chinese government are flagrant violations of american sovereignty. >> reporter: breon peace, the u.s. attorney for the eastern district of new york, says officers from china's ministry of public security, or mps, were operating illegally. >> the mps subjected chinese dissidents living here in the united states to the authoritarian rule of the prc. that is unacceptable. >> reporter: two men, both new

york city residents, have been charged with conspiring to act as agents of chi's government. 34 os ha also been charged with operating an online troll farm to threaten chinese dissidents in the u.s. and to d vis nt what investigators uncovered is part of a pattern across the world. >> we found these stations in over 50 countries where people are being pressured, where people are being threatened, where people are being harassed and intimidated. >> reporter: in this case, the suspects involved face up to 20 years behind bars if convicted. u.s. officials tell us that china poses the most serious threat to u.s. national security. norah. >> jeff pegues, thank you. there's a lot more news ahead on the "cbs overnight news."

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>> announcer: this is the "cbs overnight news." i'm erica brown in washington. thanks for staying with us. after a winter of torrential rains and record snowfall, western states are bracing for spring and what's being called the big melt. california, nevada, and utah all have snowpack levels twice as deep as normal, and in some places, it's ten times as deep. while the melting know is already filling parts of reservoirs, it's also causing localized flooding, and more is expected as the weather heats up. elise preston has the story. >> reporter: the big melt is now

threatening several western states with severe flooding after a season of record snow. >> there's just too much snowmelt to be accommodated in our rivers and channels. >> reporter: in arizona, the intense water flow washed out roads and forced rescues. in utah, whichaw historic snow levels, residents are bracing for more flooding after a series of avalanches, mudslides, and sinkholes. >> just this amount of water flow that we're seeing right here is strong enough to knock you off your feet. >> reporter: the rush of water is helping reverse dire predictions for utah's great salt lake, the country's largest saltwater lake is rapidly rising after reaching a historic low in november. in northern california, now full reservoirs are releasing water to make room for the runoff, a dramatic shift after being drained by three years of extreme drought. >> there are something like 30 million acre feet of water stored as snow in the sierras. >> reporter: the thick snow

there is also forcing bears out of the woods and into neighborhoods to hunt for food. >> oh, my god, there's two of you! ah! get out! get! go away! >> reporter: the storms have been a boon for california's water supply. less than 9% of the state is under drought. it was 99% just six months ago. elise preston, cbs news, los angeles. the recent leak of top secret documents paints a bleak picture of taiwan's ability to defend itself against an invasion from china. pentagon assessments show taiwan is most vulnerable to strikes by china's air force and missile systems and that the island would have little chance of defending itself without the immediate intervention of the united states. u.s./china relations are at their lowest point in decades, and the navy has sent a guided missile destroyer to patrol the taiwan strait, calling it a routine mission. elizabeth palmer reports. >> reporter: taiwan's steep

coast and mountainous terrain make it something of a natural fortress. but china's people's liberation army could well mount an attack anyway, so taiwan is beefing up its military and training with new u.s. weapons. michael cole is an analyst for the republican institute in taiwan. >> the aim is not to defeat the pla but to promise that the pla would suffer such damage that it would not be worth trying to invade taiwan. >> reporter: some civilians want to be part of that deterrent. joyce chan is one of them. >> is it at the back of your mind and the back of your teammate's mind that one day this could be for real? you might have to fight to defend taiwan. >> sure. it's no doubt about that. >> reporter: right now, though, everyone is praying it won't come to that. but when the taiwanese people woke up ten days ago to the news

that xi jinping had ordered military exercises in the sea and the air around taiwan, they were reminded that when he says he'll take control of the island by force if necessary, he means it. >> i know exactly how terrible a war is. >> reporter: richard hu retired as a major general in taiwan's army. a lightning chinese missile attack, he says, could knock out critical infrastructure before taiwan or the u.s. had time to react. >> you could wipe out 95% of the power in taiwan if there's a war. >> wow. so you're saying the strategic planning overall is not serious? >> not very serious. >> reporter: taiwan's military is getting more serious, but not everyone believes in fighting off china. the main quo men tang political opposition wants closer links, and some want to outright join

it. but young taiwanese like burton lee and test shu say absolutely no way. they were proud to show me life in this flourishing democracy that they say would be crushed by chinese rule. >> we will lose our freedom, democratic, our religion, our tradition. >> reporter: this tropical island, from its ultra high-tech semiconductor factories to its rural highlands where tea is still picked by hand is now the most dangerous flashpoint in the confrontation between the u.s. and china. 23 million lives, american leadership, and probably the world's economy all hang in the balance. i'm elizabeth palmer in taipei. officials in ukraine say they're not concerned about the leaked pentagon documents. they show the ukrainian army is running low on equipment and ammunition and the country's air breaking point. are rea a hots fm raine. rr: inmallit

ofvian le'ses l h been reduced dust. ukraine says russian missiles rained down on slavian sk. we don't know what their target was, but what they hit here was an apartment building full of civilians. ukraine wants to stop its people being slaughtered like this, and documents recently leaked from the pentagon appear to show that ukrainian air defenses are dangerously depleted. but they'll soon be getting a patriot air defense system from the u.s. with more on the way from europe. meanwhile, there are new signs that russia's military is faltering. some of the leaked documents show russian special forces have been decimated by the invasion according to "the washington post." bolstered by new weapons, a agains rsian forcessexpeoaunchn.

and at this airfield hidden amongst farmland, we were taken to see some of their most valuable assets. ukrainian helicopter gunships fly 20 feet above the ground to avoid detection, targeting russian positions. >> it's quite dangerous, but these tactics, it works very well. >> he flies bombing runs on machines that rely heavily on old soviet-era technology. they get the job done, he told us, but they need more. >> it's never enough? >> never. it's never enough. for sure it's never enough. >> reporter: there's been a lot of speculation that ukraine's counteroffensive could be hampered or even delayed by the leak of those u.s. government documents. but publicly at least, ukrainian officials have downplayed their impact. >> that was holly williams in kharkiv. you're watching the "cbs overnight news."

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the economic effects of the coronavirus pandemic continue to linger in many small towns. one study found stores, and man those that closed were family-run. but there are signs of revival. conor knighton has the story. >> reporter:. >> this is the big moment. >> reporter: opening day at this store in saco, maine, is always cause for celebration. >> we're open! >> reporter: after a long winter, customers pour in to get their first taste of spring. >> i wanted to be the first customer of the year for good luck. >> yeah, it's a special day. go ahead. do some more. >> reporter: today, these visits feel especially sweet. for a while, everyone thought that this store had closed for good. >> it was gone. it was sad. it was like an old friend had died. some of this candy here was two for a penny when i was a kid. >> reporter: peter grew up in saco. the weiwei store originally operated as a country general

store. back then, it was considered a way way out of tow by the same family for nearly a century. when it closed down in 2003, it sat empty for eight years. >> i'm thinking -- >> reporter: until peter and his wife, bridgit, both retired teachers, reopened the store as a labor of love. >> thank you very much. >> it was a treasure, and it had to be taken away from them to really understand it and appreciate it, to get the point of a greater appreciation of what this was. >> it was a real loss for our community. it was a hole. >> reporter: in the community of albany, vermont, a 2013 fire forced their general store to close. resident kristen yuri and her neighbors fell the absence immediately, but any new owner hoping to make a profit was scared off by the high renovation costs. >> could you have afforded to buy this on your own? >> no. so we could have bought the

property, and we would not be in the store>> repr: tod albany st, the jenny, is thriving again. run by partners e oed a successful store in the nearby town of crafts bury. but in the case of albany, the community now owns the building. >> this is albany's store, and we're operating it. i think that's the key to success in this kind of business. >> reporter: the albany community trust raised hundreds of thousands of dollars to purchase and renovate the store. utilizing everything from grant applications to pie auctions. >> this is a place that says that this is a town, right? that like there's a "there" there. >> reporter: ben doyle is the president of the preservation trust of vermont. the group has been helping towns take charge of their local stores to ensure they survive. > we want to be able to go to a store where the people running it know who we are, they know

what we like, and they offer something that we can buy, and that sense of community that you can't buy. >> thank you.ng onthejey. and sandwiches, but people are coming for more than just convenience. >> like maybe somebody doesn't really need something from the store, but they're like, i'm just going to pop in and like get a thing. but it's not about the thing. it's about the people and the connection and the sense of place and community. >> reporter: the general story of rural general stores is not necessarily a happy one. >> in this area, salt water taffy is big. >> reporter: unless you've got something doing it purely for the love of it, it's a hard road for young entrepreneurs, which is why the locally supported model may offer a path forward. a community deciding there's a value to having a store that goes beyond the bottom line. >> that's what we're trying to

keep, right, is hold on to these main streets, hold on to these places that bring people together. that it's not another dollar gel, whalt th youvery week. i hope you'll tune in. l forward to seeing you right here. you are fully loaded and completely equipped for the race that's been designed for you.

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a message and have some pastor that i feel connected to in my home with me. ♪♪♪ a food fight is under way in california where the state is considering banning five chemical additives linked to cancer and other health concerns. danya bacchus reports. >> do you want strawberries? >> reporter: ashley and germane rawlings are careful about what they feed their two young children. they read food labels closely. >> i'm vetoing every product that comes in here because i'm curious what's in here. >> if you can't pronounce the name, you probably shouldn't eat it. >> reporter: california could become the first state in the nation to ban the sale, manufacture, or distribution of foods containing five chemicals linked to cancer risk, reproductive harm, and behavioral issues in children. >> these are the worst of the worst. >> reporter: assembly member jesse gabriel is a sponsor of

ab-518, which would prohibit the use of red dooir number 3, titanium dioxide, potassium bromate, brohm nated vegetable oil. >> when i used these chemicals are not being independently reviewed by the fda, that was my aha moment. >> reporter: this dietitian says the number of additives in our food supply is concerning. >> the more we consume of a certain product, the more likely to have negative effects in our body. >> reporter: thousands of chemicals are added to processed foods. red dye number 3 has already been banned in cosmetics in the u.s. the food industry is pushing back. nearly a dozen associations responded, saying the federal government has a comprehensive food safety process and the five chemicals have been thoroughly reviewed and continue to be deemed safe. >> did you eat the first one? >> reporter: for the rawlings family, they hope products with less additives adds up to better health. danya bacchus, cbs news, los angeles.

and that's the overnight news for this tuesday. reporting from the nation's capital, i'm erica brown. this is cbs news flash. i'm shanelle kaul in new york. jailed "wall street journal" reporter evan gershkovich will have an appeal hearing today in russia. he was arrested on espionage charges on march 29th and faces up to 20 years in prison. the state department declared him wrongfully detained. hollywood screenwriters have voted to authorize a strike if a deal cannot be reached with producers before their contract runs out on may 1st. the last writers strike in 2007 cost l.a.'s economy an estimated $2.1 billion. and "the late, late show" has announced that harry styles and will ferrell will be guests for james corden's final night

as host. that airs on cbs on april 27th. for more, download the cbs news app on your cell phone or i'm shanelle kaul, cbs news, new york. tonight, the search for suspects and a motive in a deadly mass shooting at a sweet 16 party that killed 4 and injured 32 others. what we're learning tonight about the victims, including a hometown football hero. here are tonight's headlines. a celebration turns to devastation in a small alabama community. >> i was standing right -- i was standing right beside him. a kansas city teen just released from the hospital after he was shot for knocking on the wrong door. >> sometimes you go to a wrong address, and you should never, ever have to worry that your life will be taken.

as gun violence surges in america, could artificial intelligence help detect a threat in a crowd? >> it takes our cameras from passively recording events that happen to being able to prevent some things that happen. today's long-awaited trial in a $1.6 billion lawsuit against fox corporation and fox news channel has been delayed by one day. >> this really cracks the door open for a last-minute settlement. the fbi arrests two men, accusing them of running a secret chinese police station in new york city. >> we are on to you. we know what you're doing, and we will stop it. the coast guard is searching for three people missing on a boat off the west coast. >> the salors were supposed to make contact in cabo san lucas, mexico. and ten years after the boston marathon bombing, how one survivor turned her tragedy into triumph. >> i don't think why me, why me, why did this happen to me? i think it's about, what am i going to do now?

>> announcer: this is the "cbs overnight news." we do want to begin with another community in mourning tonight, shattered after a mass shooting at a sweet 16 party. four people were killed. their ages range from 17 to 23. two of them were high school seniors. at least 28 others were injured, and several are in critical condition when gunfire turned a birthday party into a nightmare in the small town of dadeville, alabama, on saturday. authorities say they have strong leads but have not released anything about a motive or possible suspects. and it comes as a new cbs news poll shows 77% of parents are concerned about gun violence and as guns have surpassed car accidents as the leading cause of death for children in the u.s. cbs's omar villafranca is going

to start us off from outside the scene of the shooting. good evening, omar. >> reporter: good evening. police are still very tight-lipped about this investigation, but the girl who had the sweet 16 party at this venue behind me told me that there were rumors that someone may have had a gun. well, that prompted her mother to stop the party, turn the lights on, and tell everyone inside, if you're over 18 and you have a gun, you need to leave. later that night, the unthinkable happened. >> i'm broken. my heart is just ripped out. >> reporter: the sorrow is almost unbearable for latonya allen. on saturday, she was chaperoning her daughter alexis' sweet 16 birthday party at a small dance studio when shots rang out. >> it was just a disaster. they were running, hollering, crying, just hollering. eportethe afh, her 18-year-old son, phil dowdell, was on the ground in a pool of blood. the high school senior was set to graduate next month, a star

under the friday night lights, dowdell was headed to play football on saturdays for jacksonville state. but this saturday night, number 7 became another number, the latest victim of a mass shooting, with his little sister and mother by his side. >> he was trying to say something. by that time, he couldn't say anything else, and he stopped breathing. >> reporter: another high school senior, 17-year-old shaunkivia smith, was also killed, along with 19-year-old marsiah collins and 23-year-old corbin holston, who reports say did not attend the party but went to check on a younger family member. the community came together at a vigil last night. daequan knew phil since kindergarten. >> i was standing right beside him when the shooting went on. i think ep went right into it. i wish i could have pulled him out. >> reporter: alexis says her big brother's final act was to protect her from the gunfire. >> you told me your brother

grabbed you by the waist and pushed you down. >> uh-huh. >> did your brother save your life? >> yes. if it wasn't for him, i mean i don't know where i'll be. i don't know if i would still be standing here today. >> reporter: the mother, latonya allen, was also shot twice. she told me she still has a bullet stuck in her side and in her leg. she's going to be fine, but she told me her focus now is on finding the killers and planning her son's funeral. norah. >> omar villafranca, thank you for being there. there is breaking news now out of kansas city, missouri, where the county prosecutor has charged an 85-year-old white man for shooting a black teenager twice, including once in the head. police say the teen went to the wrong address to pick up his younger brothers. he rang the doorbell and moments later, multiple shots were fired. cbs's roxana saberi is outside the police station with these new details. >> do you think if he was a white 16-year-old boy and he

rang that door, do you think it would have been the same outcome? >> reporter: ralph yarl's family says the 16-year-old was gunned down after mixing up the address. he was supposed to go to ne 115th terrace but instead rang a doorbell on ne 115th street, just one block away. the yarl family's attorney says ralph waited for a few minutes after ringing the bell before the door opened. >> he was immediately confronted with an armed man, who told him that he did not want to see him on his property again. and then he opened fire. >> reporter: still, yarl's aunt, faith spoonmore, says the teen ran for help, knocking on three more doors before a neighbor called 911. >> as his aunt, what do you think about that? >> hearing that part of the story is even harder. he was clearly hurt. he was clearly bleeding. he was clearly needing help. >> reporter: ralph is now recovering at home. kansas city mayor quinton lucas says it's hard not to draw that conclusion.

>> something like this happening is unimaginable, and it's unbelievable, and it's hard to expect that something like this would happen if ralph weren't black. >> reporter: the shooting sparked protests here on sunday. >> we just want justice. you know, ralph is a good kid. he doesn't deserve what's happening to him. >> reporter: the charges the prosecutor just announced are two felonies against andrew d. lester. one carries a potential life sentence. a warrant has been issued for his arrest, and the prosecutor confirmed what the mayor suspected, that there was a racial component in the incident. norah. >> roxana saberi with those new details. thank you. we want to turn now to a major development, a police shooting in ohio. a special grand jury decided today not to indict the akron police officers who killed 25-year-old jayland walker during a chase last year, shooting him 46 times. the grand jury said the officers were legally justified in their use of force against walker, who

was unarmed at the time when he was killed. walker's death ignited protests after body cam video shows officers firing dozens of rounds after he jumped out of his

>> announcer: this is the "cbs overnight news." well, tonight the justice department is cracking down on alleged chinese agents right here in the united states. they're accused of intimidating critics of china's government, even setting up a secret police station in new york city. cbs's jeff pegues reports, that's only one of the alleged schemes to harass dissidents. >> reporter: the secret police station took up an entire floor of this chinatown building in new york city. according to investigators, it was run by the chinese government to track and even harass dissidents living here in the u.s. >> the defendants' actions under

the direction of the chinese government are flagrant violations of american sovereignty. >> reporter: breon peace, the u.s. attorney for the eastern district of new york, says officers from china's ministry of public security, or mps, were operating illegally. >> the mps subjected chinese dissidents living here in the united states to the authoritarian rule of the prc. that is unacceptable. >> reporter: two men, both new york city residents, have been charged with conspiring to act as agents of china's government. 34 mps officers have also been charged with operating an online troll farm to threaten chinese dissidents in the u.s. and to spread propaganda and sow divisions in the country. what investigators uncovered is part of a pattern across the world. >> we found these stations in over 50 countries where people are being pressured, where people are being threatened,

where people are being harassed and intimidated. >> reporter: in this case, the suspects involved face up to 20 years behind bars if convicted. u.s. officials tell us that china poses the most serious threat to u.s. national security. norah. >> jeff pegues, thank you. let's turn now to that blockbuster trial against fox news for defamation that is set to begin tomorrow in a delaware courtroom unless there's a last-minute settlement. dominion voting systems is suing fox for $1.6 billion in damages for reporting baseless allegations about the company following the 2020 election. cbs's scott macfarlane is outside the courthouse. >> reporter: the cable giant's biggest stars plus fox corporation chair rupert murdoch could take the stand this week as the company battles a defamation lawsuit filed by dominion voting systems. >> whether it's dominion, evs, whatever the company -- voting machine company is.

>> reporter: the lawsuit alleges the network knowingly broadcast bogus claims dominion's voting machines were used to rig the 2020 election in favor of then-candidate joe biden. >> what our next guest says is evidence of voter fraud. sidney powell. >> reporter: as fox hosts and their frequent guests, trump lawyer sidney powell and rudy giuliani aired false claims following the election. text messages show tucker carlson saying powell is lying and laura ingraham saying that sidney is a complete nut. >> i think it could be very damaging to fox's stars or to fox's big-name executives, including and especially the murdochs, to have to testify. >> reporter: dominion's lawyers will argue fox was worried about losing viewership and purposely let the false fraud claims continue on-air. but proving defamation requires overwhelming evidence. >> what you're dealing with is a high bar, and it should be a high bar for the simple reason that we want freedom of the press. >> reporter: a final round of jury selection is set for

tomorrow morning followed by opening statements unless there is a last-minute settlement. norah. >> scott macfarlane, thank you. we want to turn now to three americans missing at sea for nearly two weeks. a desperate search is under way by the mexican navy and u.s. coast guard. cbs's elise preston has new details in the international effort to find them. >> reporter: loved ones of carrie and frank o'brien and their friend william gross are desperate to hear from the three missing sailors. >> it's agony, pure agony. i'm trying to hold myself together. >> reporter: ellen says her daughter and son-in-law have sailed together for nearly 20 years and are both licensed captains. they asked gross, who has 50 years' experience, to journey with them. it's been nearly two weeks since the americans left mazatlan. they made calls that same day requesting a stop in cabo san lucas for food and fuel, their last known communication. the trio was supposed to reach cabo on april 6th and continue

on to san diego but never made it. the search area now is 2,500 square miles. >> it's a long trip even in good conditions. >> reporter: rough seas and high winds may have been a factor, and the couple's 44-foot sailboat "oceanbound" has older navigational equipment. still, o'brien's mother is hopeful. >> she's a survivor, and she's physically strong. if anybody can survive this, they can. >> reporter: now, there is a travel warning for tourists in this region. o'brien's mother tells cbs news the couple docked their boat in mazatlan and sailed there many times. norah. >> elise preston, thank you very much. tonight the biden administration is urging americans trapped in the african nation of sudan to shelter in place as there are no plans right now for a u.s. government evacuation from that country. all u.s. personnel are said to be safe and accounted for. three days of fighting between

sudan's army and a paramilitary force have left nearly 200 people dead and more than 1,800 wounded. the "cbs overnight news" will be right back. [sfx: stomach gurgling] it's nothing... sounds like something. ♪ when you have nausea, heartburn, indigestion, ♪ ♪ upset stomach, diarrhea. ♪ pepto bismol coats and soothes for fast relief... when you need it most. hey, i just got a text from my sister. pepto bismol coats and soothes for fast relief... you remember rick, her neighbor? sure, he's the 76-year-old guy who still runs marathons, right? sadly, not anymore. wow. so sudden. um, we're not about to have the "we need life insurance" conversation again, are we? no, we're having the "we're getting coverage so we don't have to worry abit" coersation.

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is a potential new high-tech line of defense to help protect schools and other public places from future mass shootings. cbs's manuel bojorquez shows us how artificial intelligence could provide an early warning system when every second counts. >> reporter: miami's frost museum of science is using artificial intelligence to try to keep visitors safe. >> it monitors all the cameras. >> reporter: brooks weisblat is vp for technology. >> every tool helps. every second counts, you know. anything that we can do to further protect the community and our visitors and our staff. >> reporter: the technology works with their existing cameras and has been programmed to spot different types of weapons. say my phone were a weapon. the system would immediately alert the entire museum security staff, but also pinpoint my exact location. they could then determine whether it's a police officer, for instance, or an actual threat. the ai technology is developed by a company called b motion.

is is s president. airports, schools, they're big places. so is it revolutionary to have the ability to have ai do it as opposed to human eyes? >> absolutely. you cannot have millions of people watching cameras all over the world. it's almost impossible. >> reporter: he points to the nashville school shooting as an example. the company claims this simulation shows the weapon being detected once the shooter got in and during the time the shooter spent near this hallway. >> it would have provided the officers the exact location of that shooter. >> reporter: similar ai programs like the one from company zero eyes are being used in schools, like florida's hernando county school district. the goal would be to get police on the way before a single shot is fired. >> we can be aware, and law enforcement can be responding within seconds where notified. >> reporter: the company b motion says its system can cost

school districts anywhere from $40 to $70 per student, per year. critics of ai say it's not foolproof, but the institutions we spoke with say it's another layer of defense. norah. >> really interesting story. manny bojorquez, thank you very much. well, a new vaccine could be a game-changer in the fight against the deadliest form of skin cancer. skin cancer. we've got the details next. want luxury hair repair that doesn't cost $50? pantene's pro-vitamin formula repairs hair. as well as the leading luxury bonding treatment. for softness and resilience, without the price tag. if you know... you know it's pantene. ah, these bills are crazy. she has no idea she's sitting on a goldmine. well she doesn't know that if she owns a life insurance policy of $100,000 or more she can sell all or part of it to coventry for cash. even a term policy. even a term policy? even a term policy! find out if you're sitting on a goldmine. call coventry direct today at the

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and injured more than 260 others. among those most severely wounded was dancer adrianne haslet. for tonight's "person toprs wit to reflect on her journey of healing. adrianne haslet is a runner. she wasn't always, but that's one of the many things that has changed in the last ten years. >> are you still angry? >> i'm angry that people were hurt. i'm angry that he did it, but i don't live in the anger anymore. >> that's a change for you. >> it's a very big change for me, yeah. that's taken some time, and i think, you know, running helps. >> haslet was near the finish line on april 15th, 2013, when two bombs exploded. she lost her left leg. it's hard to believe it has been ten years since the boston marathon bombing. >> i hear you say that, and i want to correct you. it just didn't feel like ten years. >> what lessons have you learned since then? >> gosh. i think i've learned that when someone tells you something can't be done, it's a reflection of their limitations and not yours.

i've learned that on the days you need to be in the fetal position and sob, you should do that. >> the competitive ballroom dancer left the hospital promisg d ain and to run the boston marathon. both goals she accomplished. now her focus is on her mental health and advocating for others. >> i think one of the most valuable lessons i've learned with

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prosecutors say an 84-year-old man shot a black teen who showed up at the wrong house. what he allegedly said before he opened fire on the 16-year-old. detained in russia. the crucial hearing today for a "wall street journal" reporter charged with spying. hiding in plain sight. federal agents accuse two americans of helping run an illegal chinese police station in new york city. captioning funded by cbs well, good morning and good to be with you. i'm anne-marie green. we begin in alabama where police