And from rio, the final showdown. What Michael Phelps and ryan lochte said about each other before their faceoff tonight. And of course, the other breaking headline from rio tonight. Shes made america very proud. Good evening. And we begin tonight with the urgent search for the missing at this hour, after a deadly explosion at an apartment complex in maryland. The explosion t the night, and you can see family members climbing out of windows. One man holding his phone light there to get the rescuers attention. Heres what we know tonight. At least two people were killed in the inferno. Dozens hurt, including several firefighters. The blast rocking the entire neighborhood. Abcs Gloria Riviera is on the scene tonight, amid growing questions over whether this was a gas explosion. Smoldering devastation from above, all thats left of this maryland apartment complex. It appears there was some sort of explosion. The debris has covered the entire road. Reporter that explosion striking just before midnight, when residents were blasted out of bed. The boom felt a mile away. What i saw was, like, a lot of buildings on fire. I got so scared, there were like, people jumping out of the window, like, screaming for help and kids screaming, because there are a lot of kids scared. Reporter parents dropping their children into waiting arms. Neighbors saving neighbors until firefighters could reach those trapped and pull them to safety. By morning, the search for the missing. Crews locating two bodies in the ruins. This woman cant find her 9yearold son. Its horrific. And then you add on the known injuries, and what we already know is a few fatalities, it just takes it from devastating to unthinkable. Reporter the cause of the blast now under investigation. But officials say, residents here called 911 weeks ago to called the Fire Department because of the smell of smell of bad gas. Reporter gas . Yes. Reporter that scent can sometimes signal danger, as it did before this deadly gas blast at a home in new jersey. And two people were killed last year at this new york apartment after work on an illegal gas line. And Gloria Riviera is with us live from maryland tonight. And gloria, we saw your reporting there, that residents, neighbors had called, concerned about the smell of gas before. Do we know if authorities answered those calls . Reporter thats right, david. They did respond to those 911 calls. They say they went door to door, but at that time, they did not find anything specifically hazardous. Crews will be working into the night here, still searching for several missing. David . Gloria riviera on the scene all day for us. Gloria, thank you. We are also following another developing story tonight. Another major accident at an amusement park. The third in just a week now. Tonight, a 3yearold boy airlifted to the hospital after a roller coaster accident, and you can see the ambulances right pittsburgh. Authorities say the 3yearold was riding a roller coaster with his older brother. The ride has been shut down tonight, and heres abcs linsey davis. Reporter this afternoon, that 3yearold was airlifted to a hospital after riding a wooden roller coaster at the idlewild and soak zone park just outside of pittsburgh. The boy was conscious while being treated onsite. He was talking. He was alert with his family. Reporter officials arent yet saying exactly how he was hurt on the ride called rollo coaster, built the rules say, guests under four feet tall must be accompanied by an adult. In this case, his older brother. This latest accident comes on the heels of two others just this week. 10yearold caleb schwab was killed sunday at the schlitterbahn water park in kansas city, on the tallest water slide in the world. There was a very loud, just, a boom, boom. I knew immediately that somebody had fallen off the raft. Reporter and on monday, injuries after falling from a ferris wheel in tennessee. They just screamed a little bit, and then they just hit the ground and just landed there. Reporter authorities in pennsylvania are now investigating just what went wrong. It is still unclear how long the park will remain closed. David . Linsey davis, our thanks to you. Now, to major developments in the race for president tonight. Donald trump and his new attack against president obama, saying that president obama is the founder of isis. Trump in florida today, standing by his words, saying Hillary Clinton is the cofounder. And you will hear what he said when asked by a conservative radio host if thats what he really meant. Also tonight, what were now learning about the man who climbed trump tower and was then pulled into those windows on the 21st floor. Abcs david wright is on the campaign trail. Reporter tonight in florida i call president obama and Hillary Clinton the founders of isis. Theyre the founders. Reporter donald trump is hammering away at that new line isis is honoring president obama. He is the founder of isis. Hes the founder of isis. I would say the cofounder would be crooked Hillary Clinton. Reporter conservative radio host hugh hewitt pressed him on that. I know what you meant. You meant that he created the vacuum, he lost the peace. No, i meant hes the founder of isis. But hes not sympathetic to them. He hates them. Hes trying to kill them. I dont care. He was the founder. Reporter trump also mocked the Clinton Campaign for allowing the father of the orlando shooter to sit behind her at one of her rallies. When you get those seats, you sort of know the campaign. Reporter but right behind trump how many of you people know me . Reporter is mark foley, the exflorida congressman who resigned in disgrace for sending sexually explicit messages to young pages. The Trump Campaign struggling to recapture the dominance he enjoyed in the primaries. By the way, four times on the cover of Time Magazine over the last number of months, which is amazing. Reporter this week, hes got meltdown. Not exactly the headline youd want. Ohios very close, but we need help. Reporter today at a religious roundtable, trump asked for help. Having a tremendous problem in utah. Reporter and in an interview, he even entertained the idea that he might not win. Its either going to work or im going to, you know, im going to have a very, very nice, long vacation. All right, david wright with us live tonight, and david, you also have new reporting on a new letter tonight from more than 70 republicans, asking the Republican Party to stop funding Trumps Campaign . Reporter david, the letter says, every dollar spent on donald Trumps Campaign is a dollar of donor money wasted. Needless to say, the Republican National committee is unlikely to agree. David . David wright with us live tonight. David, thank you. And it was while we were on the air last night here, we watched that man scaling trump tower, pulled in through those windows on live television. Tonight, hes under arrest. Reporter tonight, new details emerging about the young man who climbed trump tower, hoping to get a private meeting with donald trump. The climber transfixing the city during the threehour ordeal. Police taking out a window pane to head him off. When he got to the 21st floor, police ordering him to come inside. He refuses, and grabs onto that building. Officers then reach out and grab him. They pull him in safely, ending the spectacle. Here you see him just after the arrest, inside an ivanka trump shoe store. Police immediately taking him to the hospital for a psychological evaluation. His name, stephen rogata. The 19yearold posted this video manifesto on youtube, just a day before. I am an independent researcher. Reporter a close family friend telling us, shes never known the young man to be obsessed with politics. Very shocked. We didnt even know he climbed. Reporter and david, tonight, rogata is still in the hospital, but hes officially been charged with Reckless Endangerment and criminal trespassing. Gio benitez with us in manhattan. Gio, thank you. Meantime, Hillary Clinton tonight far from trump tower, and wasting no time fighting back against trump. Her campaign saying donald trump has, quote, an aversion to the truth, after he labeled the president the founder of isis. Meantime, clinton and her olympics strategy. Abcs cecilia vega in michigan. Reporter Hillary Clinton in a detroit factory today, painting her opponent as an out of touch rich guy. Him and his friends, at the expense of everyone else. Reporter clinton blasting donald trump, even using the olympics to take political shots. Arguing trumps ideas for the economy are based on fear. If team usa was as fearful as trump, Michael Phelps and simone biles would be cowering in the locker room, afraid to come out to compete. Instead, theyre winning gold medals. Reporter clintons camp pouring more than 13 million into tv ads airing as america goes for the gold. And those companies that move overseas . Shed charge them an exit tax. Reporter the score so far . 56 million to 0. Thats what clinton is spending on general election tv ads. Trump, not a dime. Clinton is getting a little bit nervous, crooked hillary, shes getting a little bit concerned. I said, thats okay. Thats okay. We sit back and wait. Cecilia veg tonight from detroit. And in addition to those olympics ads, mrs. Clinton also trying to put pressure on trump tonight for not releasing his taxes, cecilia . Reporter they could come, and her taxes could come as soon as tomorrow. The 2015 taxes. Ten years worth for tim kaine, too, david. They are definitely trying to put the pressure on here. All right, cecilia vega with us, as well. Thank you, cecilia. We are learning new details about the Accidental Police shooting of a 73yearold wife and retired librarian in florida. It was a Community Safety of the officer posing as the attacker while conducting that safety workshop. Police saying his gun was not supposed to be loaded. Abcs phillip mena tonight, as we hear from that womans husband for the first time. Reporter this photo shows the moment officer lee coel playing an attacker in that fateful Training Exercise raises his revolver and taking aim before firing the shots that would kill 73yearold mary knowlton. She had a fake n, reporter Charlotte Sun photojournalist sue paquin took the photos. Knowltons husband, just feet away. Went and tried to save her life and i was just in shock. I just didnt know what to do. Reporter officer coel, who is now on administrative leave, has a controversial past. Get down reporter his use of a k9 on a cyclist is the subject of a pending civil lawsuit. And three years ago, he was stripped of his gun and badge at another Florida Police department amid Excessive Force allegations. Tonight, punta gordas police chief still unable to explain why coels gun had real bullets in it. I accept full responsibility for the actions of my department. Reporter the Florida Department of Law Enforcement is looking into the shooting. But it could take up to four weeks before their investigation is complete. David . Phillip mena with us tonight. Phillip, thank you. There are storms moving through the east right now, including right over central park moments ago, not far from our studio, amid flood watches across the south 48 hours from the gulf coast, all the way to minnesota. Heavy rains and flood, roads there and homes in mississippi, deeming with a lot of water tonight. In the meantime, the heat across the east. And lets get right to rob marciano, who was just standing in that storm moments ago. Rob, its passed . Reporter its passed, but it was pretty intense when it came through. And like many areas, when it rained, it came down heavily. Weve expanded the flash watches tonight along Northern New England and across iowa, severe thunderstorms rolling through continues to sit and spin. Over eight inches of rain falling in some spots. Look for another fiveplus. I think will rain there right through saturday. As you mentioned, the other big story is the heat. We have heat advisories now up from the gulf coast, through the plains, from d. C. To philly, all through boston. Tomorrows highs, again, will be in the low to mid 90s, with the humidity, it will feel like over 100 degrees. With rain like today coming through, i have to be honest, david, that feels pretty good. All right, come on back inside, rob. Thanks so much. In the meantime tonight, we turn now to a foiled terror plot near the canadian border. Police in ontario killing an alleged isis sympathizer, and it was the fbi, it turns out, that warned canadian authorities he was about to carry out a suicide bomb attack. The suspect was killed in a confrontation with officers in front of his home. Police opening fire as he detonated an explosive inside this taxi right here. Authorities believe he was planning to launch an attack within 72 hours. Were going to turn next tonight here to rio. And two friends about to face off tonight. Abcs matt gutman on the gymnast with the golden touch. Reporter tonight, its the triumph seen around the world. Simone biles and aly raisman, vaulting over the competition, taking gold and silver in the womens allaround. Biles beaming, hugging raisman as they see their scores. Aly raisman, bursting into tears after finishing nearly a flawless floor routine. Before the games, biles talked about what its like, standing up on that podium. Oh, gosh. Thats a very emotional time. You just kind of feel everything, like, all your hard work put into that one moment. Reporter and across the olympic park, another jawdropping moment. Katie ledecky notching an olympic record in a qualifying heat of the 800meter free. So far ahead, it looked as if she were all alone in the pool. Also poolside were ryan lochte and Michael Phelps, the old men of swimming, who happen to be the best men of swimming. Rivals for over a decade, and swimming sidebyside in the 200meter individual medley, their strokes in lock step. He brings the best out of me and were races, so, you know, its meets like these that i love the most, where him and i get to go in and kind of duke it out. Reporter the two most decorated swimmers finishing one and two ahead of tonights final. Of course they want to beat each other in the water, but outside of the water, they are just best of friends, and you can see up on the podium, when theyre even laughing. Its great. Reporter phelps is 31, ryan lochte is 32. Which apparently is considered ancient in the world of olympic swimming. Now, phelps has said hell retire at the end of these olympics, but today in a press conference, lochte, who has been in that 12year rivalry with him, said, i honestly dont think that this is his last olympics. David . Matt gutman with the lucky assignment this year. Matt, let us know how it goes. And there is still much more ahead on world news tonight this thursday. Authorities want your help right a young woman waving a gun right here in this video, after a dispute with another driver. And the second case, the dash cam video showing a driver shooting at another car with a child inside. Authorities, again, need your help. New developments this evening. What weve now learned about the second female jogger found dead, and the new clue. Why police are now seeking the publics attention. And later, its not exactly an olympic feat, but watch this. The fan who tries to catch the ball, gets a face full of nachos. Made us hungry. Well be right back. 200 miles per hour. To win, every millisecond matters. Both on the track and thousands of miles away. With the help of at t, Red Bull Racing can share critical information about every inch of the car from virtually anywhere. Brakes are getting warm. Confirmed, daniel you need to cool your brakes. Understood, brake bias back 2 clicks. Giving them the agility to have speed precision. I love my shop, but my back pain was making it hard to sleep and open up on time. Then i found aleve pm. The only one to combine a safe sleep aid plus the 12 hour pain relieving strength of aleve. Now im back. Aleve pm for a better am. burke at farmers, weve seen almost everything, so we know how to cover almost anything. Even mermutts. 1940s aqua music burke and we covered it, february third, twentysixteen. Talk to farmers. We know a thing or two because weve seen a thing or two. You dont know this yet but in fifteen hundred miles, youll see what youre really made of. After five hours of spinning and one unfortunate ride on the gravitron, your grandkids spot a 6 foot banana that you need to win. In that moment, youll be happy you partnered with a humana care manager and got your health back on track. Because that banana isnt coming home with you until that bell sings. Great things are ahead of you when your health is ready for them. At humana, we can help you with a personalized plan next tonight here, those two road rage cases, and authorities this evening want your help, catching the drivers. Heres abcs clayton sandell. Reporter on the streets north of los angeles tonight, police are working to stop the driver of this dark honda before he does this again. Firing twice at the family, including a child, in this white suv. Driver shot at her, armed with unknown type of black reporter the suspect enraged, police say, because the suv apparently sprayed his car with windshield wiper fluid. The level that this incident took was quite alarming. It had to have been terrifying. Reporter in gainesville, florida, after a runin on the street, police say this black truck follows this silver sedan into a gas station. Anger erupting as this woman wildly points and waves a pistol. Police arrested the driver of that truck, jacob sylvester, but investigators say he refuses to identify the woman with the gun. Most road rage cases avoid taking a deadly turn, but since 2010, road rage has been blamed for at least 1,700 deaths nationwide. And david, as for that california road rage case, the l. A. County sheriff tells us tonight, they still have no suspects. David . Clayton, thank you. When we come back here tonight, new developments about the second female jogger found dead. What authorities have now revealed today, and they think it could help catch the attacker. And then, the driver who tried to get around this train today. Warning here for everyone. Is a warning here for everyone. Like you do sometimes, grandpa . Well, when you have copd, it can be hard to breathe. It can be hard to get air out, which can make it hard to get air in. So i talked to my doctor. She said. Symbicort could help you breathe better, starting within 5 minutes. Symbicort doesnt replace a rescue inhaler for sudden symptoms. Symbicort helps provide significant improvement of your lung function. Symbicort is for copd, and emphysema. It should not be taken more than twice a day. Symbicort contains formoterol. Medicines like formoterol increase the risk of death from asthma problems. 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They are asking the public to look for a suspect who might have scratches and bruises. Authorities were back at the scene today where that young google employee was discovered. A driver is lucky to be alive tonight after a commuter train slammed into his pickup truck. The moment of impact caught here. Authorities say the driver intentionally drove around the lowered gates at a Railroad Crossing in a boston suburb. The driver of the pickup survived. And going for the gold tonight, if thats the color of the nacho cheese. A foul ball sliced into the stands in pittsburgh. Check this out. A fan, a beer, nacho plate in hand, goes for the catch, gets a face full of nachos. The fan does get a good patdown. Little insult to injury. Someone tossed him a clean shirt, but he dropped that, too. He was a good spot about it all. When we come back here, the all the crying to her little boy. All the crying to her little boy. 80 of women say a Healthy Lifestyle is a priority. 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Enbrel, the number one rheumatologistprescribed biologic. . . . Its easy to love your laxative hydrates, eases and softens to unblock naturally, so you have peace of mind from start to finish. Love your laxative. Miralax. Ask. Only on abc 15 at 6 00 p. M. A clerk recalls the moments she is robbed by a man and a boy still missing. What neighbors saw finally, the 43yearold american mom who won gold, her little boy watching. Heres amy robach. Thats a gold medal for Kristin Armstrong. Reporter american cyclist Kristin Armstrong making history. The oldest female cyclist ever to win gold, and the first to win the same event three games in a row. I think that for so long, weve been told that we should be finished at a certain age, and i think that theres a lot of athletes out there that are actually showing that thats not true. Reporter waiting for her at there wasnt a day that i went to train that i didnt think of, what would it be like if i had my son, lucas, in my arms, on the top step of the podium. Reporter lucas asking after the race, why are you crying . You won she said, thats what we do. We cry when were happy. Being a mom has been my secret weapon. It provides me balance and it keeps me on track and it keeps me super focused. Reporter after the race, armstrong said shed never had so much fun in competition. And today, she turns 43. What a way to celebrate. Happy birthday. Well see you tomorrow. Good night. Action. Gunned down before he could make a life in the u. S. A family left wondering what happened inside this 7eleven. The search for jesse wilson and the story about his family is raising questions and one city served up a lot of monsoon rain. First from the abc 15 live desk new details into the most deadly attack carried out by the serial june12. He killed two women and a 12 yearold who were just sitting in a car. Abcs Jason Valentine pouring through new clues. Reporter in the documents this stack, all the Evidence Police collected, this stack, all the witnesses they interviewed and this one statements from the witnesses, including one who says she saw two people with the killer. Reporter they are gunned one of their daughters looked out the window after hearing shots. She saw a hispanic man with a gun and two passengers in the car. Witnesses described hearing 5 to 10 shots but nobody saw the bullets being fired. Inside the victims Vehicle Police found shell casings. The women were shot at close range. Something he the shooting. Murder. Straight out murder. Reporter also in the victims car police found 3,000 cash. Other Evidence Police collected Surveillance Video from four nearby businesses and one house just across the street from the shooting. But the report does not say what any of the video shows. Jason valentine, abc 15. The 50,000 reward in this case. If you need more information we