Showdown. What michael fell phelps and ry lochte said to 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 in the middle of the night, and you can see 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 of whether this was a gas explosion. Reporter tonight, the smoldering devastation from above, all thats left of this maryland apartment complex. 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 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 traps and pull the s 34 people hospitalized. By morning, the search for the missing. Crews locating two bodies in the ruins. This woman cant find her 9yearold son. Its horrific. Then you add on the known injuries and what we 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 report you said two weeks ago, people called the Fire Department because of the smell of smell of bad gas. Reporter that scent can sometimes signal danger, as it did before this deadly gas blast as 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 is with us live from maryland tonight. And gloria, we saw your reporting there that residents, neighbors called concerned about the smell of gas before. Do we know if authorities answered those calls . Reporter thats right, david. The Fire Department tells us, they did respond to those 911 calls. They went door to door and they say, at that particular time, they did not find anything hazardous. Crews will be working into the night here, still searching for those 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, air lifted to the hospital after a there on the scene nearby 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 air lifted to a hospital after riding a wooden roller coaster at the idlewild and soak zone park outside pittsburgh. The boy was conscious while being treated onsite. He was alert, talking with his family. Reporter officials arent saying yet exactly how he was coster, built in 1938. 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 just two others this week. 10yearold caleb schwab was killed sunday at the schlitterbahn water park in kansas city, on the tallest water slide in the world. It was a very loud boom, boom. I knew immediately that someone 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 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 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 tat 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 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 the time cover again. 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, 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 reporti 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 skating trump tower, pulled in through those win taupes on live television. And heres abcs gio benitez. 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 amd grabs onto the building. Office everyone 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 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. Reporter and david, tonight, he is still in the hospital, but hes officially been charged criminal trespassing. David . 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 strategies. Abcs scecilia vega in michigan. Reporter Hillary Clinton in a detroit factory today, painting her opponent as an out of touch rich guy. He wants ari 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 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 zero. 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. Thats okay. Th o cecilia vega with us live from detroit. And in addition to those olympics ads, mrs. Clinton also trying to put pressure on trump tonight for not releasing his taxes, scecilia . Reporter they could come her taxes could come tomorrow, the 2015 dtaxes. They are definitely trying to push the pressure on here. All right, cecilia vega with us, as well. Thank you. We are learning more details about the Accidental Police shooting of a 73yearold wife room. It was a Community Safety exercise, and we have new images 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 she had a fake gun, his gun was supposed to have blanks. 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. His use of a k9 on a cyclist is the subject of a pending civil lawsuit. And three years ago, he was another Florida Police department amid Excessive Force allegations. He resigned, but was later cleared. Tonight, punta gordas police chief still unable to explain why coels gun had real bullets in it. Reporter the florida Law Enforcement is looking into the shooting. But it could be three to four weeks before their investigation is complete. David. Phillip, thank you. There are storing amid flood watches across the south over the next 48 hours, from the gulf coast all the way to minnesota. Heavy rains and flooding. Roads there and homes in mississippi, dealing 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, it has passed . Reporter it has, but it was pretty intense when it came through. When it rained, it came down england and across iowa, severe thunderstorms romming through that area. And our gulf coast low continues to sit and spin. Over eight inches of rain falling in some spots. I think it will rain there right through saturday. The other big story is the heat. Heat advisories 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 humidity, feel like over 100 degrees. With rain like today coming through, i have to be honest, that feels pretty good. Rob,ha turn now to a foiled terror plot near the canadian border. Police in ontario killing an alleged impa sizer and it turns out it was the fbi 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. Two friends about to face off tonight, and a shining star making america very proud late today. Abcs matt gutman on the gymnast with the golden touch. Reporter tonight, its the triumph seen around the world. Simone biles and ali 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 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 in to that one moment. Reporter and across the olympic park, another jawdropping moment. Katie ledecky notching a world record in a qualifying heat of the 800 meter free. So far ahead, it looked as if she were all alone in the pool. Also poolside were ryan lochte of swimming, who happen to be the best men of swimming. Rivals for over a decade, and now, roomies. Swimming sidebyside in the 200 meter individual medley, their strokes in lock step. He brings the best out of me and were racers. 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 just best of friends and you can see up on the podium, when they are even laughing. Its great. Reporter phelps is 31, ryan lack tooe lochte is 32. Phelps has said he will retire at the end of these olympics, but today, in a press conference, lochte who has been in that rivalry with him said, i honestly dont think this is his last olympics. David . Ahead on world news tonight this thursday. Authorities want your help right now, after two frightening road rage incidents. 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 we now learned about the second female jogger found dead and the new clue, why police are now seeking the publics attention. And later, itsot this. The fan who tries to catch the ball, gets a face full of nachos. Made us hungry. Made us hungry. Well be right back. Miles per. 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. 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 knowanything. Over almost 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, 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. At humana, we can help you with a personalized plan for your health for years to come. 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. Driver shot at her, armed with unknown type of black handgun. Reporter the suspect engrajed, 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 cops in Gainesville Florida are trying to solve their own road rage case. Anger erupting as this woman wildly points and wave as pistol. Police arrested the driver of that truck, 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 tried to get around this train today. The driver survive, but authorities say, there is a warning here for everyone. The wolf was huffing and puffing. 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. Of your lung function. 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Authorities revealing 27yearold Vanessa Marcotte struggled with the killer. 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 is alive tonight. The moment of impact caught here. Authorities say the driver intentionally drove around the lowered gates at a rail road crossing in a boston suburb. The driver survived. And going for the gold tonight, if thats the color of the nacho cheese. A foul ball in pittsburgh. Check this out. A fan, a beer, nacho plate in hand, goes for the catch, gets a face full of nacho. Little insult to injury. Someone tossed him a clean he was a good spot about it all. When we come back here, the mother at the olympics who won gold, and then how she explained all the crying to her little boy. E is a priority. In getting key nutrients from food alone. Lets do more. Add one a day womens 50 complete multivitamin. 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Only miralax hydrates, eases and softens to unblock naturally, so you have peace of mind from start to finish. Love your laxative. Miralax. 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 theres a lot of true. Reporter waiting for her at the finish line, her 5yearold son, lucas. 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 m th podium. Reporter lucas asking after the race, why you are crying . You won . She said, thats what we do. We cry when were mom keeps me k and keeps me super focused. Reporter after the race, so much fun in competition, and today, she turns 43. What a way to celebrate. David . Happy birthday. Well see you tomorrow. Off a would be burglar. Breaking details in the hunt for a joggers killer. Extreme heat and extreme humidity. Heather the local uber driver charged with raping a teen. His violent past that uber apparently missed, but 5 investigates found. Ed clowning around for on a serious mission. Tonights 5 for good, this groups work to make Sick Children smile. Ed right now police are revealing more about who they are looking for in a killing in princeton. Good evening. Im ed harding. Heather maria im maria stephanos. Investigators have just confirmed Vanessa Marcotte struggled with her attacker before her death