Mother and her child. Water pouring into this new york city bus. And now the new tropical threat brewing in the atlantic. The new twist in that murder in rome. The parentof those American Teens breaking their silence. And now the social media posts uncovered raising questions about the suspects. Escape in paradise. Nearly 30 people forced to jump off a burning ship and plunge into sharkinfested moments. Then the moments their rafts wont deploy. How they were finally rescued. An abc news exclusive. Descendants cast and director now opening up for the first time about the sudden death of Cameron Boyce. The emotional interview. How theyre keeping his legacy alive only on gma this morning. And good morning, america. So great to have you with us on this thursday and were really looking forward to sharing that exclusive interview with the descendants cast ahead. Just a powerful sitdown. Also, big night last night. That debate. Former Vice President joe biden against the rest of the pack. Weve got all the reaction and the big moments coming up. A lot of reaction to that. First we begin with breaking news. Firefighters are racing to contain a deadly gas explosion in kentucky. Flames spreading to homes forcing evacuations. Abcs Steve Osunsami starts us off with the very latest. Good morning to you, steve. Reporter good morning to you, michael. More than 75 people had to be moved from their homes and the families say as they drove away they could feel the flames from the fire. This was the sound and the scene early this morning south of lexington, kentucky. A massive natural gas pipeline exploded roaring flames into the sky. Its so bright. All units be advised we are receiving multiple calls of an explosion of some kind. If i zoom in real close, you can see the flames perfectly. Reporter at least one person confirmed dead and five others left with nonlife threatening injuries. Several nearby hopes caught fire. People had to run for shelterer. It was like an atomic bomb went off. Just a big roar and fire going all the way up in the sky as far as you could see. Our windows were shaking really bad and our doors the ground, you could hear the ground just moving and tumbling and rolling. And then we got to feeling the heat from the fire. And so we got in our vehicle and took out, got away from it. That fire created an immense amount of smoke and heat and debris. Reporter the fire shot up 300 feet in the sky. The fire ball was so big it showed up on the weather radar. Crews have been able to shut off the gas. This pipeline stretches thousands of miles from the mexico border to new york city. Michael . All right, thank you so much, steve. Amy . Now to those severe summer storms hitting the northeast. Flash floods trapping families and take a look at this. Water pouring into a bus station in staten island. Rob marciano has been tracking this all for us. It was quite the day yesterday. Yeah, a couple days. We had so much humidity in the air. The rain came down heavy and hard. This is in massachusetts. Look at that flash flooding there. 74mileperhour wind gusts at boston logan and hundreds of Flight Cancellations because of that. Over 100 damage reports and the last days have been rough. Reporter overnight torrential rains and damaging winds ripping through the northeast. And powerful lightning. This bolt over the patriots gillette stadium. While in new york heavy downpours causing flash flooding across the metro area. Watch as this bus quickly fills with water. These passengers just trying to keep their feet dry. And thunderstorms drenching new england. Submerging parts of massachusetts. Flash flooding trapping a pregnant mom and her small child inside their car. Half an our later this tow truck pulling them to safety. Were thankfu i mean its just a car. Its okay. Very thankful. God is good all the time. Reporter in winthrop this marina bearing the brunt of 54mileperhour winds. Scariest thing ive ever seen in my life. Reporter residents stunned from the amount of damage done to their neighborhood. Fallen trees crashing into homes knocking out power lines. Im in shock. Reporter New Hampshire recovering from similar damage. Emergency crews racing to clear streets and restore electricity. And in philadelphia, storms wreaking havoc there too. Winds Strong Enough to blow this section of metal bleachers into the middle of a football field and uproot this tree right out of concrete, crushing the car parked next to it. Such dangerous conditions across the northeast. These trees knocked over. So important to get inside to the lowest level of your home. Tonight will be quieter, dryer, more comfortable. But, were watching the tropics likely to develop in the atlantic. Weve got at least a week to deal with that. Thats going to be probably a Tropical Storm if not a hurricane and track toward the u. S. Bringing rain to florida and parts of the southeast coast, saturday, two to three inches but not much in the way of tropical development. Flossie now a Tropical Storm and another one off the coast of mexico. Erick at one point was a category 4 storm. Heres the track. We keep it south of hawaii later on today, then decreasing in intensity but will bring rough surf and rain and gusty winds. This is flossy, the forecast track goes for hawaii. This one hopefully goes north of it and weakening as it gets to the somewhat cooler waters around those islands. Over to you guys. All right. Thanks, rob. Busy summer for you. The race for the white house and a heated night on the debate stage. Ten more Democratic Candidates battling it out in detroit. Frontrunner joe biden facing his toughest attacks yet on his record of deportations, criminal justice and much more. Abcs mary bruce was right there for it all. Mary, so much of this ended up being about biden and a Kamala Harris showdown. Reporter hey, cecilia, voters looking for a rematch last night certainly got it after his lack luster performance in the first debate, joe biden came prepared for round two and launched a staed fast defense of his record and came ready for a fight but so did his opponents. Kicking off his rematch with senator Kamala Harris, joe biden had a simple request. Go easy on me, kid. But harris made it clear she has no plans of easing up hammering him on health care. Your plan does not cover everyone in america. By your staffs and your own definition. You do nothing to hold the Insurance Companies to task for what they have been doing to american families. Reporter biden fired back saying harris plan will cost too much and take too long to implement. This idea is a bunch of malarkey what were talking about here. I dont know what math you do in california but i tell you, thats a lot of money and there will be a deductible. Reporter after her Strong Performance in the first debate, harris was also forced to play defense. Congressman Tulsi Gabbard slamming her record as a prosecutor. In the case of those who were on death row, innocent people, you actually blocked evidence from being revealed that would have freed them until you were forced to do so. There is no excuse for that and the people who suffered under your reign as prosecutor, you owe them an apology. My entire career i have been personally opposed to the Death Penalty and that has never changed. I dare anyone who was in a position to make that possession, to face the people i have faced, to say i will not seek the Death Penalty. Reporter it was bidens record that dominated the night under relentless assault. President obamas former housing secretary hitting the former Vice President on the high rate of deportations under the obama administration. Mr. Vice president , it looks like one of us has learned the lessons of the past and one of us hasnt. What we need are politicians who actually have some guts on this issue. I have guts enough to say his plan doesnt make sense. Reporter new york mayor bill de blasio piling on. If youre debating donald trump hes not going to let you off the hook. So did you say those deportations were a good idea or did you go to the president and say this is a mistake and we shouldnt do them . Which one . I was Vice President. I am not the president. I keep my recommendation to him in private. Reporter on criminal Justice Reform cory booker and joe biden going head to head. If you want to compare records and frankly im shocked that you do, im happy to do that. There is nothing done for the entire eight years he was mayor. There was nothing done to deal with the Police Department that was corrupt . There is a saying in my community. Youre dipping into koolaid and you dont even know the flavor. You need to come to the city and see the reforms we put in place. Reporter the candidates spent more time attacking each other than the president but senator Kirsten Gillibrand getting a laugh with this shot at trump. The first thing that im going to do when im president is im going to clorox the oval office. Reporter by the end of the night biden was brushing off the attacks. Well, i love your affection for me. You spent a lot of time with me. Reporter now, biden did have a few flubs including in the final moments where he urged his supporters to go to joe30330. Now, its not clear if he was trying to reference a phone number so supporters could get Text Messages about his campaign or direct them to a website but cecelia, the problem is that is not his campaigns website and it appears that a Pete Buttigieg supporter scooped up that url. You mentioned that comment telling Kamala Harris go easy on me, kid, before the debate even started. Thats generating some controversy this morning and harris was kind of forced to respond. Reporter yeah, look, joe biden certainly has his own signature folksy style but he was criticized. A lot saw it as patronizing and her campaign was quick to point out and question the former Vice President calling the 54yearold senator a kid. But harris says she was not offended by it adding nobody is going to define me. Another thing we saw, mary, some of those lower tier candidates really trying to distinguish themselves especially ahead of this next debate qualifying for this next debate, abcs debate next month trying to gain traction. Reporter yeah cecelia these debates are a chance for these less have known candidates to have a break through moment. We saw Tulsi Gabbard having some success with that when she grabbed the spotlight and challenged Kamala Harris, in fact, on google she was the most searched competitor of the night but a lot of people, it seems, were simply looking to know who was up and who was down on google at one point an over 2,000 increase over the search of who is winning this debate . Cecelia . They want that answer. Thanks so much. Michael . Thank you, cecilia. Now to the search for that missing navy pilot after a fighter jet crashed during a Training Mission in Death Valley National park injuring seven people on the ground. Kaylee hartung is in california outside the hospital where those victims were treated. Good morning, kaylee. Reporter good morning, michael. The canyons of death valley particularly the one known as Star Wars Canyon are familiar training territory for military pilots. Flying low is an important skill for them to have and they provide a unique opportunity to hone that skill. The navy said never before has a crash happened at this site. This morning the search under way for a navy pilot after an explosive crash in californias death valley. Just be advised that is in the Death Valley National park. Reporter Authorities Say two planes similar to the ones seen here were flying together through this certified military training route when one f18 fighter jet went down. Smoke seen billowing from the steep cliffside as debris burned. The pieces of the aircraft were smaller than a dinner plate and scattered over a large area. Reporter the pilot of that jet is still missing. Search and rescue teams immediately dispatched. It is in Star Wars Canyon. Reporter originally named rainbow canyon, the star wars nickcame comes to the likeness of tatooine featured in this saga. Its known for unbeatable views of fighter jets speeding through the colorful canyon walls. At the time of the crash seven tourists who were among those watching nearby suffered cuts and scrapes as shrapnel flew through the air. We were just behind and the plane come like this. Reporter their injuries minor but the status of the pilot remains unknown. Were looking for an aviator out there and hoping for the best. Reporter as six of those spectators were brought to this nearby hospital yesterday, treated and discharged. Another remains in a hospital in los angeles with more serious injuries. As the search for the missing pilot and the investigation into what caused that crash continue, the popular overlook is closed. Cecelia . Okay, kaylee, thank you. We turn to new developments involving osama bin ladens son believed to be killed in a takedown. U. S. Officials saying he was being groomed to lead al qaeda. Our Foreign CorrespondentJames Longman has the latest on this. Good morning, james. Reporter good morning, cecilia. Osama bin laden was perhaps the worlds most infamous terrorist and now we know his son an apparent heir is also dead. Two u. S. Officials tell abc news that hamza bin laden believed to be about 30 was killed at some point over the last two years and u. S. Intelligence played a role in the operation but it remains unclear where or how he died. Back in february the state department offered a 1 million reward for his capture calling him a key leader. His last public statements came last year when he threatened his native saudi arabia with violent jihad. Papers found in the compound where his father was killed in 2011 show he may have been groomed for a prominent role in al qaeda, cecilia. Hes really being, as you said, labeled as a key leader. Do you have a sense of how significant this takedown was . Reporter well, certainly on a symbolic level the bin laden name is a powerful recruiting tool for al qaeda. Theyve been losing ground to isis for some time so arguably i guess they represent a greater threat now. Amy . Now to a stunning scene in pennsylvania. Take a look at this. Its a debris field and its all that remains of a home after a massive explosion injured at least four people. Just moments before this house exploded firefighters responded to a call from the homeowner saying they smelled gas. The homeowner and three firefighters were injured but thankfully remarkably everyone made it out alive just in the nick of time, michael. Thank goodness for that, amy. Now to a wild rescue in iowa. Police racing to save a pair of rafters struggling in a raging River Holding on for dear life after their raft went over a dam and flipped. Will reeve has the story. Hold the light. Reporter watch as Police Officers scramble to save a couple trapped in the turbulent waters of an iowa dam after their raft capsized in a river. Dont let go. What happens with the dam, that water and backwash starts to spin and its almost like a washing machine as it just churns and churns. If you get caught in that and its at least once or twice a year somebody does, very rarely will you make it out alive. Reporter the rescue all caught on police body cameras. Using a rope to pull the couple in, listen as the officers struggle to hold on. Get your head up. Give me some room. Dont pull me. Reporter at times the powerful current dragging them beneath the surface. Shes under. Stop. Stop reporter at last the officers get the couple to safety. Whoa, whoa, whoa. I think the video tells the story pretty well. Those officers took a lot of physical effort, teamwork and a little bit of time too. The couple was treated at a hospital and released. The Des Moines Police deptment said the officers dried off and went to work. They were helped in this rescue by a Good Samaritan so hats off to everyone involved. You can see how exhausted the ones who were rescued. Imagine the rescuers. Everyone just putting everything on the line. Glad it turned out well. Thanks, will. Now another thing perhaps you have to see to believe. Take a look. Yep. Thats a herd of goats on the loose parading through a neighborhood just outside of seattle, washington. So the community actually hires these goats to keep the weeds in check between the houses, wow, but you could say they were a little overzealous. They burst out of the enclosure they were in. The community had to band together to round them up. As you can imagine this process took several hours but the weeds are gone, guys. Its great. Win win. Almost did a joke. It was too easy. Ill leave it alone. In some nongoat related news were following new developments and this is a serious turn in that murder case in rome. The social media post photos of the teen suspects now raising questions and what their parents are saying this morning. Then the american tourist forced to jump off a burning ship into sharkinfested waters, the moment theyre rescued. A powerful interview with the descendants cast about the loss of their costar Cameron Boyce. But first lets go back to rob. We talked hawaii and east coast. Lets talk the eastern part of kansas, ten inches of rain already, training thunderstorms, could see storms east of denver as well. Stormy cities now sponsored by progressive. Were still discussing the goats. Well be right back. He goats. Well be right back. Everyone gets 10 kohls cash for every 50 spent earn it on everything . L