Countries where his father, the former Vice President , acted as the top u. S. Diplomat . Mistaken identity, the stunning twist in the attack on david ortiz. Dominican Authorities Saying big papi was not supposed to be the target. What the new footage reveals as authorities search for the suspected mastermind last seen in the u. S. An abc news exclusive oh, my god, the crane is falling over. Oh, my god. A man in his apartment when this crane collapsed right through his ceiling is now speaking out for the first time. The shark scares coast to coast. The surfing competition stopped when a shark is spotted and where these jawdropping photos were taken. A shark just feet away from a family swimming in kneedeep water. Never really over and Avengers Endgame never really over. The major superhero surprise, secret scenes now being added to the biggest block buster of the year. Just because its ove ove ove mean its really over good morning, america. Thank you guys for joining us on this thursday morning. A lot of excitement about that the avengers news. And speculation about what theyre adding. Im wondering myself. We have that breaking news, robin, this morning. We want to get right to it. The u. S. Confirming iran shot down an american drone. Our chief Global Affairs correspondent Martha Raddatz starts us off with the latest. Good morning, martha. Reporter good morning, robin. This is a significant and dangerous provocation. There have been a spate of attacks blamed on iran in recent weeks, but this is a direct attack on a u. S. Military asset. This drone is one of americas most sophisticated unarmed surveillance aircraft. The u. S. Says the drone was operating in International Airspace over the strait of hormuz, that narrow but vital oil shipping waterway when it was struck by an iranian surface to air missile. Iran does not deny shooting down the u. S. Aircraft, but claims it was in iranian territorial airspace. The commander of the revolutionary guard saying our borders are a red line. Any enemy that violates them will not return and will be destroyed adding that iran does not intend to engage in war with another country, but saying iran is ready, robin. You say that theyre claiming that their border is the red line. What can the u. S. Do about that . Reporter well, youve heard President Trump downplay the attacks on the oil tankers but, again, this is a u. S. Military asset. But the u. S. Also has to be careful not to overreact. The iranians may want a retaliatory strike to garner support at home and from allies in the region but this will be urgently discussed here at the highest level, robin. Martha, thank you. Well bring in our contributor, colonel Steve Ganyard for more on this. What is your take on all that we are reporting this morning, steve . Robin, unfortunately, the u. S. And iran are getting very close to war. A countrys sovereign airspace goes out to 12 nautical miles. If this u. S. Drone was outside that 12 nautical miles, it had every legal right to be there and the iranian shootdown was completely illegal. So its a very tense situation and the u. S. Is going to have to respond in some way. I know were claiming its International Airspace but as you alluded to its a very defined and small area. Is there any chance that it may have wandered into that territory . Its possible. Its possible, robin. The u. S. Navy and u. S. Military forces are going to have to confirm that this drone didnt inadvertently stray into iranian air space or over iranian territory. If we have that confirmation, we know what the iranians did was illegal. So what happens next, steve . The iranians are putting on a brave face right now saying, were ready for war. They are completely overmatched by u. S. Military might. The question is did they make a mistake and inadvertently shoot it down or did they do it deliberately in an attempt to goad the u. S. Into military response . People want to know. All right, steve, thanks so much. Michael . Now to a terror plot targeting a Pittsburgh Church thwarted by the fbi. A syrian refugee is under arrest, and our chief justice correspondent, pierre thomas, is in washington with all the details. Good morning, pierre. Reporter good morning, michael. The fbi lays out a chilling case, accusing a young syrian man of plotting to ignite a religious war by attacking a house of worship in the name of isis. The target, this small Pittsburgh Church and the alleged plot to detonate an explosive device Strong Enough to destroy the church and a blast so powerful, it would likely kill many people in the residential area surrounding this house of worship. Its devastating, but thats the time that we live in. Reporter overnight, the fbi descending on the home of Mustafa Mousab alowemer, a 21yearold refugee from syria who came to the u. S. In 2016. It was actually like really scary. If this would actually go through and happen, that would have been more detrimental than i can ever imagine. Reporter according to the fbi alowemer did surveillance on the church after considering a number of targets in the pittsburgh area. The alleged plan called for an attack in the upcoming month of july. Authorities claim that alowemer purchased bombmaking components including batteries and chemicals, as well as materials for shrapnel. The plan was to take the bomb toto the church and then detonating them remotely. According to a transcript of him speaking to an fbi undercover operative, he said, when we have a goal we can leave a book bag or something and like we blow it up from someplace. Im looking for a way to leave. I dont want to get caught. The fbi identified the suspect in part because he was allegedly obtaining large amounts of isis propaganda. The Justice Department claims at one point alowemer reached out to what he thought was an isis radical based overseas. It turns out it was a covert employee of the fbi posing as an isis sympathizer online, michael. Good thing he was caught. And the fbi have been on high alert for these plots. Reporter thats right. This is the same community that saw the tree of life synagogue massacre last october and i was recently at an fbi briefing where a senior fbi official warned that the agency is experiencing a higher tempo of terrorism cases than theyve seen in a long time. He said there are roughly 5,000 open terrorism investigations internationally and here at home. This includes 1,000 isis cases, 850 domestic terrorism cases, some involving White Supremacists and 1,000 socalled homegrown extremists. All right. Thank you so much, pierre thomas. David . Now to that dangerous weather on the move this morning. 52 million americans at risk all the way from illinois to new jersey. Overnight flash flooding stranding drivers from philadelphia and ginger is tracking it all. These images coming in just within the last hour. You have to see how some people are waking up just east of philadelphia in vincentown, new jersey. Those are homes underwater. People are being rescued as we speak because there has been so much rain. On interstate 295, four inches in three hours. Thats a months worth of rain in just three hours. This is a huge deal, and we still have flood alerts stretching anywhere from indiana right through dayton, ohio, toledo, ohio, over through pennsylvania. Parts of new jersey down into r West Virginia under flood alert. The storms come with wind a lot of times too. Up to 70mileperhour winds in little rock, arkansas, where you had damage there. More than 100,000 folks without power and in greenville, texas, possible tornado. Look at the damage to that church. Who gets the damaging winds and tornados today . Its an area, a large area part in the midwest and plains but really from scranton down to atlanta, charlotte, raleigh, winstonsalem, greensboro with that area that could see tornadoes, wind and hail. Guys . Like you said, such a large area. Ginger, thank you. Now to a stunning turn in that david ortiz shooting. Dominican Authorities Say the former red sox star was not the intended target of the shooting and that this was a case of mistaken identity. Victor oquendo is in Santo Domingo with the latest. Good morning, victor. Reporter good morning, robin. Despite being one of the most recognizable people in the Dominican Republic, a beloved icon here, prosecutors say david ortiz was shot by mistake. Now the hunt is on for the alleged mastermind. [ speaking a Foreign Language ] reporter in a shocking twist, dominican Authorities Say the intended target was a man sitting at the same table as david ortiz, sixto david fernandez, dressed in similar fashion to the former slugger. The attorney general believes the plots orchestrater is victor hugo gomez, last seen in the u. S. Where hes wanted on charges including a feared drug cartel. Gomez and fernandez believed to be the intended target are related and prosecutors say gomez was upset with fernandez. He believed he ratted him out years ago resulting in him going to prison. This new Surveillance Video allegedly shows several suspects meeting at a nearby gas station before two of them ride on a motorcycle to the nightclub just moments before big papi was shot. One of the suspects taking this photo of the intended target, but Authorities Say the hitman simply shot the wrong person simply shot the wrong person, confusing ortiz and fernandez because of their attire. Moments after the shooting, watch as investigators say another suspect supervising the hit stays on scene holding on to his beer sipping it and making a call while everyone else flees. 11 suspects have been arrested so far including 25yearold Rolfy Ferreyra cruz who police say pulled the trigger. Last week the chief of police hez s the tentime allstar is still in intensive care at a massachusetts hospital and has recently been upgraded to good condition. Three suspects are still at large including the alleged mastermind. The Dominican Republic has reached out to american authorities for help. David . Victor, thank you. Now to the race for 2020 this morning and new backlash against former Vice President joe biden. He is refusing to apologize as he faces growing criticism over comments he made about being able to work with others in washington, but his examples were segregationist senators 40 years ago. Abcs mary bruce is in washington with much more on this. Mary, good morning. Reporter good morning, david. Well, joe biden says he was trying to make a point about civility and seeking Common Ground but instead hes now facing some of his harshest criticism yet and this morning instead of apologizing joe biden is now doubling down. This morning, joe biden defiant. Apologize for what . Reporter refusing to apologize for touting his ability toheagreed with, even segregationists. The point im making is you dont have to agree. You dont have to like the people in terms of their views, but you just simply make the case and you beat them. Reporter biden is facing sharp criticism for recalling his work with two staunch segregationists. At a fundraiser tuesday biden describing senator Herman Talmadge of georgia as one of the meanest guys i ever knew, but adding, well, guess what . At least there was some civility. We got things done. And recalling senator James Eastland of mississippi, biden said he never called me boy. He always called me son. Bidens 2020 rival senator cory booker demanding an apology. Somebody running for president of the United States, somebody running to be the leader of our party should know that using the word boy in the way he did can cause hurt and pain. Vice President Biden shouldnt need this lesson. Reporter other candidates also slamming bidens comments as tone deaf. For the Vice President to somehow say that what were seeing in this country today is a function of partisanship or a lack of bipartisanship completely ignores the legacy of slavery and the act of suppression of africanamericans. To coddle the reputations of segregationists, of people who if they had their way, i would literally not be standing here as a member of the United States senate is, i think, just its wnsinformed and its wrong. R uo tre not ive been involved in civil rights my whole career, period, period, period, period. Reporter now biden took it a step further saying it was senator cory booker who owes him the apology and, guys, so far out on the 2020 trail the candidates have been hesitant not to attack each other directly but these biden comments show its clearly changing. Michael . All right, mary. Definitely this has escalated. Thank you so much. Now to new developments in what is a School Shooting in new mexico. This morning, the parents of the student accused of opening fire are now facing charges as well. Abcs Clayton Sandell has the story. Good morning to you, clayton. Reporter hey, michael. Good morning to you. Now, unfortunately we all know School Shootings are not rare, but in this case, authorities are doing something we dont see much, going after the parents of an alleged gunman for not doing more to keep their son from taking their handgun, the same gun police say he used to open fire on fellow students. This morning, a new twist in a new mexico high School Shooting. Where is the student at . Ter allegedly firing at three students last february but missing, dropping the gun in the hallway and running outside. Stop right there. Stop. Turn around, face the mountain. Reporter minutes later officers arresting the 16yearold sophomore they say intended to kill his exgirlfriend and others. Do me a favor. Drop down to your knees. Reporter now the alleged gunmans parents, dale and tamara owen have been charged with contributing to the delinquency of a minor. Police say almost a year before the shooting they were warned their son was hearing voices telling him to shoot up his school, but allegedly failed to lock up a handgun their son brought to campus. This potentially opens the door to a lot of people who may not know they would be liable for this kind of inability to predict future behavior. Reporter now in the last 20 years, only a handful of adults, about four, have been charged in similar cases. The accused gunmans parents have not entered a plea and their son has not been formally charged. Hes in custody waiting for Mental Health treatment, and last month was found incompetent to stand trial. Guys . All right, Clayton Sandell, thanks. Certainly is a new twist in these cases. We shift to big news at the box office. Looks like the release of Avengers Endgame wasnt really the end. What . The blockbuster is about to be rereleased with new scenes and Chris Connelly has all the details. Now all the speculation is, which scenes . Reporter exactly, david. Good morning to you. Three hours, two minutes and still just not enough. Very soon theres going to be even more to love of Avengers Endgame as the marvel blockbuster looks to delight fans with bonus footage and maybe make Box Office History too. Marvels Avengers Endgame is getting an even longer ending. I like this one. Reporter kevin feige master of the marvel cinematic universe, declaring that the endgame now in theaters will soon get a beefed up back end. He said the additional material will include what hes calling a few surprises. I know i said no more surprises, but i was really hoping to pull off one last one. Reporter endgame was the first marvel cinematic universe film without an end credit scene. The new stuff figures to augment the movies already substantial 182 minute running time and its already way more than substantial Box Office Grosses for some bigtime bragging rights that could be in play. Right now, it has made about 832 million in the u. S. It needs a little more than 100 million plus to outdo star wars the force awakens, and become the alltime Domestic Box Office champ. It needs just 45 mill to conquer avatar and be the top grossing movie worldwide in the history of ever. Whatever it takes. Reporter fans online wondering what might be revealed as trailers included material not seen in the films final cut. Avengers, assemble. Reporter the question now is whether fans will assemble again and put endgame over the top. Yes, indeed. Well, that Domestic Box Office record, thats the one that passed from Steven Spielbergs jaws to george lucas star wars. To spielbergs e. T. And so on. If they get that, that would be a big deal. A lot of big deals going on here. Weve got seven minutes more of Good Morning America this morning. It will be amazing. Bonus and its no secret. Always great to see you, chris. Great to be here, thank you. We are following a lot of headlines this morning including our exclusive with the man who survived a crane collapsing into his apartment. And those close calls with sharks from california to South Carolina. This one was spotted just feet from a family in the water. And michael, the abc news investigation into joe bidens son is coming up. Did he and his firm make millions overseas in countries where his father is Vice President