From abc news, its this week. Here now, chief anchor george stephanopoulos. And we begin with the horrifying news breaking overnight in florida. What appears to be the deadliest terror attack on american soil since 9 11. Around 2 00 a. M. , a gunman exchanged gun fire with police, took hostages at a nightclub in orlando. Three hours later, police s. W. A. T. Teams move in, kill the gunman. Find a scene of carnage. Police believe the gunman acted alone. He was organized and well prepared. Armed with an assault rifle. A handgun. At least one other suspicious device. They believe he traveled to orlando from outside the area. And he may have been motivated by radical ideology. Officials calling this an incident of domestic terror. Lauren list sir on the ground in orlando. Reporter good morning, george. This is where it all happened. Theres still a plins the side streets. Thaw that its cleared, we can see the sign for the nightclub, pulse. Just down a block and half. It was a fun night of dancing. It was latin night. Turned quickly into terror. At around 2 00 a. M. , the gunman went on a shooting rampage. Eyewitnesses describe a scene of terror, chaos. Blo bodies on the ground and blood everywhere. One wince crawled on the ground. When he came out, he said police were tagging bodies based on their injuries. Presumably prioritizing their care. One witness was texting with someone inside the club. He was in the bathroom and said he had been shot. We now know it was a hostage situation. Authorities decided at 5 00 a. M. To rescue the people. Rescuing about 30 people. The 42 injured were taken to area hospitals. One of them is literally at the this is where we saw First Responders overnight rushing. Ambulances dropping people off. This began on lockdown at 2 00 a. M. Some of the hospitals that locked down have been lifted. This is where family and friends who believe they have a loved one that may have been a victim in the nightclub have been told to gather to get any word that they can. Anybody the nightclub is told to go Police Head Quarters and report to them. Want to stay in orlando. Terry decarlo is the executive director of the lgbt center. This pulse nightclub known as one of the largest gay nightclubs in orlando. What more with you tell us that youre learning from the community . Well, you know, we dont really know right now. Were working with the police department. Working with the mayor its a tragic situation. As f members are laying dead on the floor right now. We have another 40 to 4people in the hospital right now. Were doing our best to find out what is going on. Ive been given clearance. Im going to head to the hospital after this to see people there. Theres a lot of traumatized people here right now. We have mobilized our center. Weve thrown up ore doors. We have counsellors heading there right now. This is a tragic situation. Were trying to find out what is going on and wrap our heads around how Something Like this could possibly happen. I know this is early. Well learn a lot more as this goes on. Have you had any indications from anyone inside the club or anyone else you have spoken to that the club was targed because it was a gay nightclub . We dont know that as of yet. We dont know that as of yet. It is an lgbt nightclub. It is one of the largest nightclubs here in orlando. We cannot say it was a specific hit on an lgbt nightclub at the time. It could have been just somebody looking for a packed nightclub and this happened to be the one they picked. We dont know that as of yet. Of course, thats in our mind. Something that will always be in our mind. As soon as the police give us details, well give them out. Okay, terry decarlo. Thank you. Our condolences. We want to bring in pierre thomas. Authorities say theyre treating this as an incident of domestic terror. They believe this gunman acted alone. They had that information some indications that he was motivated by a radical ideology. Thats the early indication. Law enforcement officials checking social media. Looking at his Internet Interactions to see if they can piece together more information. Looks like a l no indications so far to ties to other associatassociates. Right now, every u. S. Law enforcement and Intelligence Agency is checking through their databases to see if they have information on this suspect. They have a name. Theyre working on confirming it. They want to know everything that is possibly can be known about this suspect to see if anything else could be coming in the future. Also, Law Enforcement officials will be concerned about so called copy cats in the coming days. Because people that are unstable could see this and act out. One of the things theyve been definitive about so far, this shopper footage the sufficient in the parking lot, they believe belonging to the gunman, has been gone through with a robotic device. Police say they believe he had a suspicious device in addition to the handgun and other weon come in from outside orlando to carry this out. Exactly. Theyre saying they believe this was well planned. Well executed. Just think about what we saw happen there according to police. Man who goes in, starts shooting people. Engages with police. Then takes hostages. They have to use a bearcat Armored Vehicle to burst through a wall to get in there to engage a suspect and kill him. This was a worst Case Scenario playing out. Lets get more on that from fbi special agent brad garrett. Apparently this thing unfolded over several hours. The first gunfire with police on the scene around 2 00 a. M. The gunman goes inside the club. Holds hostages for up to three hours. Around 5 00 a. M. , the fbi and police go in with the s. W. A. T. Team. Describe how that decision would be made. The real key is no further casualties or injuries top officers or people attdi club. Its about intelligence gathering. For example, did they eventually get cameras, mikes inside the club to see whats going on to assess whats going on before they do an entry . Where there any explosives . The suggestion is, he had maybe some sort of device on him . Were the doors mined in a certain way . You have to eliminate those things before going crashing through the doors. The other thing is maybe he stopped shooting. With no additional gunfire, it guys you time to collect intelligence. Then, for whatever reason, around 5 00 or so, they made a dynamic entry. Killed him. Released 30plus hostages. Officials say they were getting Text Messages from inside the club as well, brad. Correct. That is so key, george. The debrief of victims who escaped the nightclub and those actively still involve d sort of commander to tailor the attack. It buys them time. So you have to pull a lot of moving parts. You have to pull it together quickly. Brad, this is becoming all too xlon. Local police all across the country now prepared for situations like this. A combination of Police Coordination with federal authorities and obviously, Emergency Service personnel as you talked earlier. On gma. The idea that the hospitals are prepared for mass casualties in particular cities is all key. Its unfortunate that we have to have that level of preparation but that is reality. I want to bring in congressman peter king. A member of the House Homeland Security committee. I know this is still unfolding. Have you been able to learn anything more about the shooter, about how this unfolded . Pretty much what im hearing obviously, we heard the fbi agent say theyre considering isis leanings. That has to be the first consideration right now. That doesnt mean thats what it is. I thought it was significant that he said that. Generally, they wouldnt say it unless there was some indication that there was some leaning toward islamic terrorism. It is early. I would think the fbi probably has more information than theyre giving out. I dont blame them for that. If they have his identity, they could be going through social media. Tracking down ayossociatassocia. We are in the time of ramadan. This is when you do fear attacks by isis supporters. Theyre concerned about the european soccer championships in europe. And other events around the world. So, again, this could be part of that or it could be a someone who is antigay. We just dont know. I thought it was significant that the fbi agent indicated they are leaning toward isis. Let me bring it back to pierre thomas. I had the same sense that the congressman had. From watching the fbi and the press conferences. The police know a lot more than theyre telling us right now. Exactly. They have a name, according to my sources. Theyre going through that persons background. They gave a hint as to leanings to give the public a sense this was potentially domestic terrorism. The fbi tries to do that when they can to let people know what theyre dealing with. Its early. As the congressman said. Theyll go through every potential lead until they can say definitively what they had happen here. Theyre saying so far, congressman, that they believe the situation is over right now. They believe there is threat to orlando. They went farther to say the state of florida right now. They say they have no more indications of another threat. This gunman did act alone. This has become the big concern of Homeland Security officials. The fbi over the last year. Lone wolfs, radicalizing themselves, taking matters into their own hands. Yeah, isis, more than al qaeda, has been able to reach out to the fringe, the psychotic people, and the lone wolfs. They have the capacity to reach out and lure in lone wolfs. This is a growing threat. Not that it will be a threat to the overall security of the nation. But it can have them carry out mass killings. These lone wolfs are a threat. The immediate concern, brad garrett, that other copy cats may crop up. Unfortunately, as we have talked so many shooters, the trigger for other people to justify committing a violent act. It emboldens them. To see a shooting on television. Look, this guy pulled it off. Ky do the same thing. A big concern for Law Enforcement. Who do they know who is out there and might be ready to launch. And pie year thomrre thomas, of people Homeland Security has been keeping an eye on continues to grow. It duds. All 50 states. Individuals theyve identified with some interests in isis and other terror groups. The fbi director calls them troubled souls. People that can be reached through the internet. Isis is reaching out to encourage these people to act. We dont know definitively that thats what this is. Pierre thomas, peter king, thank you very much. A situation in orlando, as many as 20 perhaps more dead in orlando after a shooting in a nightclub. Hostage situation as well. Police and fbi investigatinvest. Well be right back. I dont want to lie down. I refuse to lie down. Why suffer . Stand up to chronic migraine. With botox®. Botox® is the only treatment for chronic migraine shown to actually prevent headaches and migraines before they even start. Botox® is for adults with chronic migraine, 15 or more headache days a month each lasting 4 hours or more. Its injected by a doctor once every 12 weeks. And is covered by most insurance. Effects of botox® may spread hours to weeks after injection, causing serious symptoms. 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Its far too soon to know what the impact of the terrible events in orlando will have. Hillary clinton making history. G got the back of president obama. Donald trump stirring up anxiety in the gop and working to put accusations of racism behind him. Im the least, just so you dmoe, the least racist person. The least racist person that you have ever seen. The least. I mean, give me a break. His criticism of that judge in san diego still drawing criticism as well. Paul ryan, the most powerful elected republican in the country denounced the comments. Claiming a person cant do the job because of their race is a textbook ryan is standing by his endorsement of donald trump. You said in explaining why youre standing by your endorsement is that what matters more to you than anything is our core principles. What is more important . Thats why i did it. This is the party of linking. Jack kemp. Ronald reagan. Thats why we speak up against any comment that has racist hints. This is not the first time you had to do this. That isnt the first time. It wont be the last time if this continues. Hopefully, this wont continue. Hopefully, the campaign will move in a better direction so that it can with be one that we can all be proud of. We got two choices. Hillary clinton, donald trump. A republican presidency. A democrat presidency. Hillary clinton is promising to double down on the obama policies. Theyre wrong. Theyre not helping. Alternative. Does that president have the temperament to be commander in chief . I cant speak for his stage presence. If private, i find his temperament better than what you see on stage. You think he could be an effective commander in chief . I think hes better than Hillary Clinton. Do i believe that these principles and policies that flow from those principles have beater chance of make ig it to law with donald trump and that Hillary Clinton . Absolutely. I do believe that. I think that is whats necessary to save the country. Even if the president espouses values that you dont share. I dont believe in those values. I dont know whats in his heart. I do think, hope, and believe, that hes going to improve the tenor, the tone of the campaign. The kind of campaign that hes going to run. I believe we need to be inspirational, astirational, and thats not the Campaign Donald trump is running, is it . Its not. I hope we can control the actions here in the house. You said you hope he can change. If he doesnt, can you stand by him . I wont speak to the future. I hope hell change the tone. 67 proposals there. One of them having to do with immigration. Protectitecting our boards. No mention about the wall paid for by mexico. I think securing the the border is realistic. We proe foez secure the border a different way. If you talk to the experts, there are places where walls are necessary. Places are fences and other kinds of things are necessary. Mexico paying for it . I never supported that. That and the mass deportation is something i also spoke out against. Were not going to agree with our nominee mitt romney and i didnt agree on everything and i ran on the ticket with him. Its a little much to ask that even agrees on everything. He talks about having mexico pay for the wall in every speech. The temporary ban on muslims in every speak. In your 67 proposals, no mention of that ban. I dont we dont agree with that ban. We dont believe we should have a religious test on people coming into the country. We should have a security test. We dont agree on that. Thats fine. Good people can disagree on things. What we do agree on, we believe we need to control who comes and goes in this country. If only for National Security reasons but for Economic Security as well. We do need to secure the border. We agree on the goal of securing the border. If you look at the big issues he talks about in every single speech. Those are all things you have come out against. How can you say that the things you agree on outweigh the thi you disagree on . Because the kinds of conversations i have had with him are about what our agenda looks like . What our principles are. He agrees with the need to get people out of poverty. Move people from welfare to work. We all agree with comprehensive tax reform to fwroe the economy. We agree we need to strengthen our military. We need a better foreign policy. On the big yrissues, we see comn ground. It seems like youre on parallel but not touching paths. Youre talking about one policy. Hes talking about another on the stump. Thats his right. Youre rejecting the choice hes offering. Were just in the midst of rolling out an agenda. In the house, were saying, heres the laws we want to pass to improve peoples lives, to fix our government and our countrys problems. That retires a president to sign them into substance to the con ver says. Doesnt it require a president to campaign on them . It requires a candidate to you need to be up front with people ahead of the election about where you want to go so if you win the election, you have the ability to go there. Thats the kind of election i have always wanted to have. Youre being up front with one set of proposals. Hes up front with another. H