Live from las vegas this morning. Live in times square, this is good morning america. And we do say good morning, america, such a tragic way to begin the week. The latest on the deadliest mass shooting in American History unfolded last night at a Country Music festival just after 10 00 p. M. Local time there. Jason aldean was on the stage. We have video of those moments when the first shots rang out. [ gunfire ]rapid gunfire ] it went on for 4 1 2 minutes. More than 200 rounds fired, bursts of fire. This is what the scene looked like from the concert goers perspective. All this unfolding. It was the last day of the threeday Country Music festival. The shooter taking aim from the 32nd floor of the mandalay bay. Here what we know. More than 50 people killed, more than 200 injured. The shooter is identified. Hes 64yearold Stephen Paddock. They also located a woman who was his roommate, his companion. Were live across the country. We want to start with matt gutman on the scene. Good morning matt. George, good morning. When you hear the stripgs of the guitar playing and you see that video and hear the gunfire you understand why some of the concert goers called it the kill box. It was shooting fish in a barrel for that shooter. Mass chaos erupting bursting on to the nearby runway. Terror and carnage erupting on the Las Vegas Strip in what has become americas deadliest mass shooting. Just after 10 00 p. M. Local time the hail of gunfire reigning down from the 32nd floor of the mandalay bay hotel. The shooter identified at 64yearold Stephen Paddock of mess keet nevada. His target thousands of civilians attending the jason aldean hotel. People bursting out on the runway of the las vegas airport. They carried the wounded victims by pickup truck even using a barricade as a makeshift stretcher. More than 50 dead and 200 wounded. Authorities saying paddock acted alone calling it a loan wolf attack by 1 30 a. M. Confirming he was dead in the hotel room. All units on the 32 floor the swat has explosive breach. We located numerous firearms in the room. Reporter authorities also reporting they located the female person of interest marilou danley, a companion of the shooter. That terror cascading up the Las Vegas Strip. You cant get in right now. Thousands of hotel rooms were shut down. People were told to shelter in place. The lock down ended a short time ago. Tens of thousands of visitors here to las vegas sheltering in their rooms in absolute terror unaware of whats going on. There were reports of false gunfire, bomb scarings. Police are now focusing on the invest gag. Thats going to be kpaus if. Its going to take days. The more than 200 injured many critical taken to local hospitals. We find linsey davis there. Theres an eery quiet outside the hospital. Youve dont hear a lot of sirens or people. Its really quiet in sharp contrast to the life saving efforts underway behind me. More than 200 injured. 104 patients are here. This particular hospital only has 18 beds in the icu. Eight people were taken to the emergency room. 12 people remain in Critical Condition. It is a big question that looms large here especially that we heard in the medical community is how well prepared is las vegas, the area hospitals, for Something Like this with all at once more than 200 injured being taken to the hospital. Of course we can expect theyre going to be asking for blood donations as well because of so many people injured. Something to keep in mind. Thank you. How can you be prepared for something of that scale. Brian ross is back with us. Surveillance cameras will tell us how. The big question is why. Exactly. The best key is the come pain your of Stephen Paddock marilou danley. She lived with him in mess keet nevada about an hour outside las vegas. Police searched for her. She was not at home when they arrived. They now found her. She has posted pictures on her facebook site of her gambling at the mand lay hotel in 2014. No one may know better than she does. Not a big online profile. Not at all on his part. He worked as an accountant over the years. He had a hunting license. Lived in nevada, alaska and sometimes new york. He sued the mandalay bay in 2012. He had a private pilots lie slens. No criminal record . No criminal record. No bar for him to buy weapons. He appeared to use a fully automatic weapon which is very difficult to obtain. So far no indication of a me problems. Police waited to share his name because they wanted to see if he had other people involved. Exactly. They put the word out about her to find her. They held back his name in case anyone else was connected with him. Coming up were live all across the country with the deadliest mass shooting erupting during the jason aldean performance. More eye witnesses opening up about the terrifying moments when we come back. Liberty did what . 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They determined she was not involved in the shooting in any way. She remains important as a key to what was going on in the mind of the killer. She was his companion for several year. Brian ross, thanks. Weve heard so many emotional accounts from eye witnesses on the scene. We want to take a look at that. I was inside. We refused to believe it was a shooting until it just kept going and going. Then jason aldean left the stage and everybody started fleeing. We started fleeing. We had to hop a gate to get out. It was crazy. Ive never seen anything like it in my life. There was short increments where there was breaks in between the shots. It literally felt like it continued for 20 minutes straight. Every time there was a break we ran and we ran. I still wasnt sure if it was actually bullets until when one of the times we paused our friend, the guy next to us, got shot. People started dropping around us. Everybody tried to stay down. Every time a group would get up to run away they would just start shooting again. They were getting closer they were going theres someone shooting right there. A lot of people were piling on top of each other whether they were bleeding or not. People were holding each others wounds down and shouting stay day. We were thinking we were going to die. A Security Guard got shot right next to us. We thought we were going to die. I called my mom to be honest. I was just calling my mom to tell her i loved her and goodbye. Everyone bottle necked and he opened fire. You could hear bullets coming through the tent. All the walls in the location were 10, 15 feet high. You couldnt climb them. Everyone was bottle necked. There was no escape. It was a kill bogx. People were climbing over people. I dont know how to compare it. There was nothing i had ever seen on tv or in a movie that compared to what we saw. There was this one Police Officer he was so brave. He was jumping over the fence to take on this guy. I was like oh, my god. Its so brave. Everyone i was with was wor abo didnt matter where you were, it didnt you didnt feel safe anywhere. And for hours after they did not feel safe. Well bring in our security consultant, former fbi agent steve gomez. It is very apparent, steve, a lot of planning went into this. A lot of planning. He clearly reconned the las vegas area, knew that there was a concert that would be held for three days there was a festival, arranged to have a room very high up. The civilians there were sitting ducks. Its so unfortunate. The biggest thing that stands out to me is the fact this kind of attack has been expected almost in las vegas for years. After 9 11 this is what we thought was going to happen. And its interesting this is now involved somebody who is not even really related to isis, al qaeda, anything like that from the foreign terrorist organization. It does appear that way and you say its something the soft target they were concerned with especially there in vegas. The concern seemed to be before that the casinos themselves, not an event like this, would be the target. Exactly. Knowing that the casinos and the hotels are heavily populated, theres always crowds around those areas, so this was a location that probably wasnt expected to be attacked from above. Clearly there was security around the concert as people were going in but here, again, is another situation where somebody figured out how to penetrate that security from high up in a hotel shooting down at everybody. Well, because just walk into the hotel with your bags. I mean, how can Something Like this be prevented . Well, its very difficult because you can carry a large duffel bag in and most people are just going to think that you have your clothes and whatever going in there and in this situation he had a lot of guns. How are you going to stop this . It really requires the help of the public. They have to be alert to anybody thats got any kind of either Mental Health issue or they are thinking about committing some sort of act, even if theyre just talking about it. You have to raise that up to Law Enforcement so they can look into it and take action. Good point there, steve. Thank you. Well go back to the white house right now. Cec cecilia vega. Reporter the president is here in the white house. We are told by senior white house officials that he has been briefed. He is monitoring the situation closely. We also know that the white house says that the white house is offering the full support to all of those local and state officials out there. Also, of course, offering their prayers. The president , as you mentioned, has tweeted this morning shortly after 7 00 a. M. Eastern time here. He said that my warmest condolences and sympathies to the victims and families of the terrible las vegas shooting. God bless you. Were also hearing from a coalition of nevada congressional representatives. They say that they are working with local officials. Of course theyre offering their thanks to all of those First Responders who are still so actively working on that scene out there. Now, george, we do expect to hear from President Trump in just a few hours that as a previously scheduled event to take place here at the white house around 11 00 a. M. Eastern. I would not be surprised if he at the top of those remarks, of course, address this is ongoing situation in las vegas. I have also asked white house officials here what is the status of the president s trip to puerto rico tomorrow. As you know hes supposed to be going there for his first trip to the island in the wake of the hurricane. I have not received a response whether that is in question at this point, george. You have to imagine theyre rethinking everything right now. Thanks very much. We talked about how the shots rang out when jason aldean was on stage, but there were other performers like jake owen still there when shots rang out and george had a chance to speak with him earlier. Jake, what can you tell us . It was wild. I was on the stage, actually, watching jason play. I had just come off stage previously, and, you know could the bullets starting to hit the roof of the stage and people started fleeing everywhere. You could hear people screaming. At that point the only way to go is wherever it just sounded like gunshots were coming from all around us. This was before anyone knew it was coming from above. It was chaotic. I keep saying it was like a bad movie that youve seen before but never thought it would be real life. So you were actually right on the stage . I was on the stage watching the show. Jason turned around and started running back to get out of the way once he realized gunshots were being fired and the crowd started running. I mean, it was it was a bad scene. There were people literally being shot. You could see blood everywhere. It was something i dont ever wouldnt ever want to see again or anyone else to see. And it seemed like jason played for a couple minutes and then he dropped the guitar and ran off stage. Yeah, well, i think what a lot of people dont understand sometimes when were up there playing we have what we call in ear monitors in our ear so we can hear each other. I dont think at first he could even hear the shots that were going off until someone maybe in his crew said, hey, you need to get off stage and run back there. I could telekind of stopped and started running. At that point we were all not knowing what to do. Well, were glad youre okay right now, jake. Thank you. No one knew what to do in those terrifying first few minutes. A lot of trauma across las vegas. Danita cohen the spokesperson for the University Medical center. Danita, thank you for taking time with us right now. Describe the situation at your hospital right now. Hi, good morning, george. So far overnight we received 104 patients, about 30 of those patients came in to our Level One Trauma Center. We are the only Level One Trauma Center in the state. Many more patients came through our emergency dertpa did receiv all the patients we received, unfortunately, four passed away. Eight patients went straight to the operating rooms. And the good news is many patients have already been discharged at this early hour. Already discharged, that is good news. And youre one of the Major Trauma Centers in the las vegas area. How many other hospitals do you know are receiving patients right now . This is an interesting Health Care Market in las vegas. We have between 10 and 12 hospitals, most do have emergency departments. Were the only Level One Trauma Center. There are some other trauma centers, level two and a level three. I am of the understanding that all hospitals received patients, although i cant confirm what the other hospitals have received. Do you have all the help you need right now . We do. Thankfully we are ready, willing, and very trained for mass casualty incidents and so we have a full trauma team in house 24 7 around the clock. Typically not with this many patients but we have a very highly skilled and Specialized Team standing by and we also operate under what we call accordion staffing. As we needed more trauma surgeons, more trauma nurses, more Critical Care clinicians we called them in and they came in. Our coo was actually wheeling patients around the hospital and grabbing blankets and doing whatever we needed to take care of not only our patients but family and friends of our patients here waiting, worrying, and wondering how they were doing. They have to be in so much shock. How many in Critical Condition . We have about 12, george, in Critical Condition. A few still in the operating room. So plenty more Health Care Still to do but after a very busy night, very proud of our trauma team this morning. Well, you ought to be and youre doing important work there. Well be right back. And well bring back pierre thomas. What do you know, pierre . Well, again, theyre locked in on Stephen Paddock trying to get Additional Information about his background. So far no ties to international terrorism, Law Enforcement officials telling us this is looking like crime, a horrific mass shooting of the nature we saw at sandy hook and the Virginia Tech massacre. So Law Enforcement, again, trying to figure out how did he get these weapons,