Escaped from a prison outside philadelphia. New audio from the suspects mother, broadcasting a desperate plea to her son for him to turn himself in. One homeowner telling us the fugitive broke into his home and stole his food. What weve just learned. A recordbreaking heat wave in the east. From texas to major cities along the i95 corridor. One of the hottest labor days on record. And the new threat in the tropics tonight. The new system that could potentially threaten the u. S. Rob marciano timing it all out. And tonight, Deadly Rip Currents up and down the east coast. We just learned three people were killed at the jersey shore. Multiple rescues over the holiday weekend. The news just coming in from overseas. Word of a critical meeting between north Koreas Kim Jongun and Vladimir Putin in russia. What the u. S. Is saying tonight. Our exclusive interview with ukraines first lady. The brutal toll this war is having on ukrainian children. Britt clennett standing by. The new images tonight. The terrifying crash into a packed dennys restaurant. Injuring nearly two dozen people. The unofficial kickoff for the race for the white house. Republican hopefuls descending on New Hampshire, as a new poll shows former President Donald Trump widening his lead. And President Biden taking swipes against his predecessor in philadelphia today. The major new retail involving Tens Of Thousands of popular high chairs. And America Strong tonight. The mother daughter Duo Kicking Off The School year, inspiring a new generation. Announcer from abc news World Headquarters in new york, this is world news tonight. Rachel good evening, and its great to have you with us on this labor day. Im rachel scott, in for david tonight. And as millions of americans return from the last getaway of the summer, Tens Of Thousands at The Burning Man Festival are still stuck in the Nevada Desert facing a very difficult journey home. Organizers asked participants to stay until tomorrow to avoid an epic traffic jam, but at this hour, many are deciding to leave anyway. A line of rvs and campers stretching some three miles long, now creeping its way toward the highway. Torrential rain took attendees by surprise, turning the desert to concretelike mud. Campers told to preserve food, water, and fuel. A Brief Break In The Rain on saturday allowed organizers to take some people away in buses. Famous dj diplo and Comedian Chris Rock hiked five miles to a road where they hitched a ride in a pickup truck. The festival rain, part of the same system that flooded las vegas, where one person drowned. Authorities also investigating one death at The Burning Man Festival. The white house says President Biden was briefed on the situation. Abcs chief National Correspondent matt gutman leads us off tonight. Reporter tonight, after a biblical deluge turned The Burning Man Festival into a muddy quagmire, the exodus. It was like mad max. Reporter like mad max . Mad max. No public announcements. No infrastructure. No information. Reporter the annual Counterculture Event typically draws over 70,000 people, turning the Black Rock Lake bed into a selfsufficient metropolis, ending with burning a giant statue of a man. But this year, the desert pummeled with three months worth of rain in just a matter of hours. Those monsoonal rains changed everything, turning this lake bed into a mud pit that traps everything. Rvs, shoes, people. But now, the roads have dried out enough that that exodus has begun. It stretches across the horizon. Trucks, rvs, bikes, cars, its a mile and a half long. Some eventgoers ducttaping shoes, others wearing plastic bags, many just going barefoot. We walked three miles, i think five more. Reporter chris rock and world Famous Dj Diplo hitching a ride in the back of a pickup after walking for miles. Siblings jared and Carly Goldberg documenting the mucky past few days. Cars spinning out in the clay, finally, they made it out today, no thanks to the organizers, they said. Just the cars driving around, no rules. No rules, no streets. Everyone for themselves. Reporter the storms part of a Monsoonal System that inundated the region, including las vegas, where at least one person drowned. And at burning man over the weekend, Officials Say theyre investigating a death during the storm. Rachel, this traffic jam behind me is now three miles long. And it continues to grow. This is why event organizers have asked folks to delay departure until tomorrow, but as you can see, that line stretching all the way there. Folks are not listening, theyre telling us, they just want to go home. Rachel . Rachel and only growing. All right, matt gutman, thank you. Next, the Desperate Search Intensifying Tonight for a convicted murder who escaped from a prison in pennsylvania. Police reporting at least four confirmed sightings and say they are closing in on him. And now a Helicopter Flying Overhead is playing the voice of his mother. Abcs jay obrien on the scene with her urgent message. Reporter tonight, the desperate plea from the mother of convicted murderer Danelo Cavalcante recorded in his native portuguese and played over helicopter loudspeakers, urging the escaped inmate to give up after five days on the run. The stakes only getting higher. If he is not actively surrendering, deadly force is authorized. Reporter authorities are zeroing in on a twomile area. Police say the 34yearold, sentenced to life in prison for fatally stabbing his exgirlfriend in front of her children, was spotted for the fourth time sunday afternoon. It was a trooper actually that observed him in some distance, gave chase, but was unable to get to him before he disappeared. Reporter tonight, a local resident tells abc news that a man fitting cavalcantes description broke into his home late friday night. He says he heard a noise and then improvised. I looked over to my left, saw the light switch, and i flicked it on and off like four times, and then paused. And then he flicked the light on and off a few times below. So i wanted him to know that i know that hes down there. And he responded, saying, yes, im down here. Reporter Ryan Drummond tells us he made sure his three kids were safe, and his wife called 911. He says hes nearly certain it was cavalcante who he saw slip out the door. He says Police Arrived quickly. I was surprised that they werent able to get him at that point, because they did have the k9 units, and there was a large number of Police Officers with flashlights in the backyard. Reporter drummond says cavalcante just stole food snap peas, peaches, and apples. A shaken community now waiting for this escaped inmate to slip up. I intend to stress him. I want to push him hard. Hell make mistakes. He is desperate. He does not want to be caught. He has very little to lose at this point. Rachel and lets get right to jay obrien, he joins us live from west chester, pennsylvania. Jay, officials warning residents to stay alert. School is back in session tomorrow after the labor day holiday. What are Officials Saying about whether its safe for students to go Back To School . Reporter rachel, local schools will open tomorrow with an increased security presence. As for this prison behind me, from where cavalcante escaped, the d. A. s office says the facility is aware of its vulnerabilities and taking efforts to address those, but its been five days, rachel, and officials have still not said exactly how cavalcante broke out. Rachel . Rachel still so many questions. All right, jay, thank you. Next tonight, this is one of the hottest labor days on record. For minneapolis, detroit, washington, d. C. , and philly. New york city will see the hottest week of the year so far. After hurricane idalia, the threat of rip currents remains high along the east coast. And now a new tropical system is brewing. So, lets get right to abcs senior meteorologist rob marciano, tracking it all for us. Hi, rob. Reporter hi, rachel. The heat is surging now as we wrap up the unofficial end of summer. D. C. Hit 98 today. They hit it yesterday. Might hit it again tomorrow. And the next day after that. Everything you see here circled in red, thats a potential record high temperature. As you mentioned, this could be the longest stretch for some folks here in the northeast. All right, leftovers from the tropical systems giving those rip currents, but we have a 100 chance of this system in the atlantic turning into our next tropical cyclone, directing itself north of the caribbean. But our Computer Models say, a week from now, it could be anywhere south of bermuda to potentially taking aim at the u. S. Rachel . Rachel all right, rob, thank you. And millions heading to the beaches this weekend, trying to escape that heat. But the Dangerous Rip Currents up and down the east coast prompted desperate rescues and at least three deaths. Heres abcs phil lipof. Reporter tonight, the dramatic rescue along the jersey shore. A Surfer Paddling out to help a man struggling in a rip current. The rescue caught on video. That man among more than half a dozen swimmers caught in rip currents along the jersey shore this weekend. Three of those people dying, including a 24yearold man. Watch as lifeguards and swimmers form this human chain, struggling to save him. A helicopter hovering overhead. People started yelling, help, help thats when everybody started to run off the beach, calling for the lifeguards. Reporter a rip current is a strong, narrow, fastmoving flow of water from a beach back out to the ocean or a lake. It can be up to 150 feet wide and faster than an olympic swimmer. Beach after beach along the east coast currently under high or moderate rip current alerts. These waves, remnants of tropical storms and hurricanes in the atlantic. The red cross says if you find yourself caught in a rip current, the first thing you need to do is perhaps the hardest. Dont panic. Dont swim directly toward the shore. Rather, swim parallel to the shore or just tread water until the rip current naturally takes you out of it. Rachel . Rachel phil, thank you. We turn now to overseas. A u. S. Official says that north Koreas Kim Jongun is set to travel to russia to speak with Vladimir Putin to sell him weapons of war. Tonight, details on what kim might want in exchange. While in ukraine, many children are returning to makeshift classrooms because their schools have been destroyed. Abcs Britt Clennett with an exclusive interview tonight with ukraines first lady. Reporter tonight, a white house official saying the u. S. Believes north Korean Leader kim jongun expects to meet with President Putin in russia. With moscow desperate for more weapons to use against ukraine, the New York Times reporting in exchange, north korea wants advanced technology for its satellites and nuclear submarines, adding the meeting could happen as early as next week. Putin tonight taunting ukraine, saying their counteroffensive is a failure. Casualties are mounting. Unicef now saying more than 1,000 ukrainian schools have been destroyed. Children starting the Academic Year in Subway Stations converted to classrooms. Other schools refurbishing basements. Makeshift classrooms like this are set up all across the country, because its just too dangerous to be above ground all the time. Only onethird of ukrainian children will be returning to a physical classroom. Online study is easier, but there, its more fun, and you understand more when you study in school. Reporter this war taking a heavy toll on the Mental Health of children, a topic close to the heart of ukraines first lady olena zelenska, who sat down with me today for an exclusive interview. Is Mental Health something you discuss often with your husband, president zelenskyy . I would honestly like to discuss it with him more, she says. He belongs to that category of people who try to deal with things on their own until the end. Zelenska voicing concern that the wests attitude to this war is shifting. We see that sometimes people become reluctant. People talk about ukraine fatigue. This is the topic of our existence. We cant stop fighting for ourselves, so, my message is, please dont stop to help us fighting. Reporter do you feel like the world is turning away . Im afraid of it, but i hope it will not happen. Reporter rachel, on that potential meeting between kim jongun and putin, the state Department Says u. S. Imposed sanctions mean russia is going rogue by advancing arms deals with north korea. Rachel . Rachel Britt Live In Ukraine tonight. All right, britt, thank you. Back here at home now, to that Mass Casualty Event near houston. An suv crashing into a crowded dennys restaurant, injuring nearly two dozen people, ranging in age from 12 to 60 years old. Abcs Mireya Villarreal in texas tonight with new details just coming in. Reporter tonight, terrifying moments in texas at this dennys right before lunchtime. A crowd of people inside. I have a mass casualty incident at dennys, car versus a wall. Reporter police say this red suv crashed into the south wall of a dennys in rosenberg, texas, just outside houston around 11 22 in the morning. We do have just a large amount of subjects with injuries, if you can let the Task Investigators know. Reporter nearly two dozen inside injured. It stopped short of their table. Reporter Sylvia Flores parents were inside the restaurant. They were here eating lunch, and when i saw them in the hospital, at the Emergency Room just now, he said he heard a big bang, and then all of a sudden, he saw the hood of the car. Reporter her parents among the injured, but now on the mend. You could see in a lot of their faces, theyre all shaken up. No one expects Something Like this to happen. Reporter rachel, all of these injuries were nonlife threatening. And as for the people that went to the hospital, we understand that they were all conscious at the time. We also understand the driver of the suv is around 30 years old and did not have any major injuries. The cause of this accident, however, is still unknown, and there is an investigation under way. Rachel . Rachel just terrifying moments in houston. Mireya, thank you. We turn now to politics. On this labor day weekend, the president ial race is heating up. Several republican candidates in New Hampshire today, as former President Donald Trump widens his lead. And President Biden in campaign mode, too, taking on trump over the economy. Abcs Elizabeth Schulze on the Campaign Trail in New Hampshire tonight. Reporter tonight, with former President Donald Trump dominating the race for the gop nomination, republican president ial candidates descending upon New Hampshire, hoping to sway its first in the nation primary voters. Best president ever reporter a new Wall Street Journal poll shows 59 of gop voters rank trump their top choice, up 11 points since april. Trump noticeably not on the Campaign Trail today. His former Vice President hopeful he can break through. How are you feeling about your chances, given this poll showing trump is the very clear front runner nationally . I feel great. Look, its very early in this campaign. Reporter Mike Pence Tasting Barbecue at a Church Picnic in concord im just here for the barbecue. Reporter pitching himself as a candidate for change. We need new leadership in the white house, and i believe we need new leadership in the party. Reporter over in milford political newcomer vivek ramaswamy, gladhanding along their Labor Day Parade, still polling in the single digits, but gaining traction after last months republican debate. We have a lot of ground to cover, and theres no doubt about that, but we also have a lot of time ahead of us. He says he wants to be like donald trump, but without the chaos. Reporter and today, President Biden touting his economic track record at a Labor Day Rally in philadelphia, sha