Nine people are dead and thousands trying to escape the floodwaters. At this moment, a curfew is beginning for columbia, South Carolina, the state capital hardest hit, nearly 20 inches of rain falling in just one day there. 1300 National Guard troops and First Responders have been rescuing hundreds at this hour nearly 500 interstate highways and roads are closed in the state. Firefighters came to the aid of this family trapped in their apartment. The roads impassable. Floodwaters have been trampling the cars. Martin savidge is joining us nearby. Reporter thats right. We are not showing you some of the massive in this area because just before we set up, emergency crews came running up and saying that there had been a breach in this dam and we had to flee. Its not only high water, its high anxiety in South Carolina. Desperate days. A man in columbia clings to a tree as floodwaters rivet his waist and threaten to wash him away. In South Carolina, the rain may be easing but not the danger. In many areas, the water continues to rise and so does the death toll. Many of those who have been killed died trying to cross through rushing water. Yep, they just made a mistake. This van made the same fate when waters carried him and his truck away. It would become one of many dramatic rescues. Just outside charleston, a mother and her 15montholdbaby had to be rescued by a coast guard helicopter after floodwater surrounded their home. Officials say there have been so many rescues like these, theyve lost count. South carolinas governor is warning people not to letdown their guard as waters recede. This is not over. Just because the rain stops does not mean that we are out of the woods. We very much still have a vulnerable situation out there. Im still going to ask citizens to please stay inside. Reporter the greatest danger is south of columbia whereas much as 2 feet of water has fallen since friday. Several area dams are overflowing and more giving way. We probably have about ten dams that broke yesterday. Reporter late this afternoon, a cnn crew and National Guard helicopter flew above this dam shortly after it breached. Warnings of the breach sent reporters and emergency crews rushing to get out of the waters potential path. Meanwhile, some 1300 National Guard troops have been called in to help hundreds of troopers and state workers. Residents are being asked to stay off the roads to allow emergency crews through but its still not easy. More than 500 roads have been closed due to high water or damage, including 100 bridges in and around the state capital. In much areas, its too early to assess the damage but many residents already know the cost is high. What ive got on my body is what we have. Pretty much everybody on that hill has lost everything this morning, our vehicles, our clothes, our everything. But the best thing is that we still have our lives. We still have our lives. People are coping, erin, with not just with what the water has done but now coming to grips with what it may yet still do. There are many other dams in danger in South Carolina tonight. Erin . Marty, thank you very much. We talked about thousands homeless waiting for the waters to start to recede. As we said, though, its going to get much worse before it gets better. Boris sanchez is outfront in manning, South Carolina. How bad is it where you are . Reporter erin, we do have good news to report tonight. Two things. First, earlier in the day, manning was entirely blacked out. One of the dozens of cities here in South Carolina that did not have access to power. In the past two hours, weve seen traffic lights come on and businesses turn on their lights. Its a very good sign. The other good sign is water is starting to recede. Its moved ten feet back. Theres been a very slow recession of water. Were on highway 301 that stretches down to florida. Its a major highway and if you look behind me, the water stretches as far as you can see, at least a mile of flooding here on highway 301. Theres debris everywhere. If you can make out the wooden structure, thats almost in the center of the street. Its obviously shifted because of the floodwater and theres plenty of debris like that that is moved around. We also see several cars submerged. Businesses have been flooded, a gas station, Convenience Store and this restaurant to my left, they are actually opened and running. They have been helping to feed National Guard servicemen that have come into this town to bring relief to people. It will take a long time for this water to totally get back. Theres a river far back there that is kind of gone over its shore and goes under highway 301. Hopefully in the coming days and into the coming week the water will finally recede. Until then, things will not look the same here in manning. All right. Boris, thank you very much. Just given the sense of the scale of what were seeing in South Carolina, they are talking with this other 1,000year flood. Outfront tonight, the mayor of columbia. Mayor, your city got 20 inches of rain in just one day. One of the things that this reporter is talking about is in a very heavily populated area. How dangerous is the situation . Its incredibly dangerous, erin. Its downright perilous which is why we put the curfew. State law gives me the authority to establish a curfew. It is requires people to stay off the roads from 6 00 p. M. To 6 00 a. M. We have reestablished the curfew from 7 00 p. M. To 6 00 a. M. Tomorrow. Only emergency workers, Health Care Workers and those repairing utility lines can be on the streets of columbia. Were in tough times right now. Initial thoughts were we might have a 100year event and then some of the other meteorologists thought it would be a 2 or 300year event. Im not sure anyone could prepare for this. What we have done, however, is seen an unprecedented amount of cooperation at the local level, state level and federal authorities. Weve seen leadership on both sides of the aisle from our governor and tim scott and Lindsey Graham and everyone is coming together to make sure we have the resources to do this. Our number one job here is to preserve human life. Once you get past that, Everything Else is secretary. Were going to work to rebuild our infrastructure but weve got to make sure we keep our people safe. And everyone is, working towards that end right now. And mayor benjamin, you talk about the extraordinary measures of this curfew. We understand but at least nine dams have failed. There could be more, and this could get worse before it starts to get better. How concerned are you that other dams could fail . Youre talking about the capital here at the state . Were significantly concerned that that could that and im not sure if i would say its likely but because i dont want to speak it into existence, as some people here in the south might say. Its very real that there are at least two other dams that could be threatened. Weve taken some measures as a community to even consider voluntary evacuations of those areas right now. There is damage and devastation and its significant. It is significant. And its the real deal, the rain has stopped but the floods have not yet subsided. Were still going to see more of the rainfall that landed in the morn part of the state. Theres more water coming so we have worked together, as we have been, to continue to take care of our neighbors, provide shelter and food but weve got to help each other. Its going to be a long haul. Its going to get worse before it gets better. I want to go now to meteorologist tom sater outfront. Its going to get worse before it gets better. How much worse . Its a great question. Erin, anytime you have historic rainfall, historic flooding, it always leads to historic river flooding. You can see the bright colors. Where we had in purple, 20 inches topping the charts, when you look at the rivers and, get this, too, near columbia, gill creek, it reached historical levels to the point that the water level was so high that it was washing away the river gauges. That just doesnt happen. And theres not many other gauges that hydrologists are going to be able to work with to try to forecast where the crest will be. Rain from the north coming from North Carolina is going to get into the larger tributaries. Everything runs from the northwest across columbia, across the central areas to the low country and out into the ocean. Forecasting this is going to be hard when you have additional levees. In some cases, 30. With the largest tributaries, erin, catastrophic problems could occur. If we have major breaches on dams, east over where it comes together in the town of cross, myrtle beach had rainfall rates last night at 4 inches an hour. They have come together there. Georgetown was submerged. They are looking at major tributaries moving there. In the days ahead, it will have the highest crest slowly make its way across the state being inundated once again. Any breach caused by a levee or a dam means more evacuations will take place and possible more water rescues. In red is all of the road closures and blue are all of the bridge closures. When the water recedes weeks from now, it could be catastrophic to a point where millions in South Carolina their daily are you teen will change to fix the roadways, sinkholes and washedout bridges. This is a 1,000year event. Thank you very much, jim. When the oregon shooter told one man to stand up, he was sure he would die. Our exclusives interview with that students terrifying moment with his mother. 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Dont start humira if you have an infection. Talk to your doctor and visit humira. Com this is humira at work. patrick 2 pretty great. Ke to be the boss of you . patrick 1 how about a 10 raise . patrick 2 how about 20 . patrick 1 how about done . patrick 2 thats the kind of control i like. And thats what they give me at national car rental. I can choose any car in the aisle i want without having to ask anyone. Who better to be the boss of you. patrick 1 than me. I mean, you. Us. vo go national. Go like a pro. Roasted turkey cranberry flatbread online with rapid pickup then eat it, however you like. Panera. Food as it should be. Breaking news, president obama heading to roseburg, oregon, on friday, the site of the deadly college massacre. A white house official says the president will meet privately with the shooting victims families as the president says he will politicize gun control. Also tonight, chilling new details about the gunman who slaughtered nine people. Survivors saying he seemed happy throughout the rampage. He asked victims about their religion even though their answers actually didnt seem to matter. He shot all of them anyway. The gunman did choose one person to survive. A teenage boy that he selected, made him sit on the side of the room and called him, quote, the lucky one. Thats who he chose to deliver his writings to police. Dan simon is outfront. Hes different. Hell never feel the same. Hell never feel complete security again. Reporter you could see it in his eyes, in his body language, that this young man has seen something truly horrific. Ze doesnt know how to deal with it right now. I dont even know he can register what happened yet. Its just too much. Reporter he is 18yearold matthew. His mom asked that we not use his last name, which is different than hers. Hes not ready to speak about it himself but how he is still alive is a question that may haunt him forever. There were people being shot around him. Yes. And at a certain point, the shooter singles out him. Yes. Reporter is that correct . Yes. Reporter what did the shooter do . The shooter asked him to get the police give the Police Something and that if he did, he would live. And that when the shooter gave him what he was told to give the police, he was told to sit in the back of the room facing the room and to watch what was going on. Reporter in the classroom, three people, including his teacher, lawrence levine, had just been shot. The shooter had asked victims whether they were christian, firing regardless of the answer. Then he pauses and turns to matthew. He doesnt know whats coming next and all of a sudden he says, you you with the glasses i believe he said, you with the glasses, stand up. Reporter and he just stood up . Ze sto he stood up and at that time he felt that was it. Reporter for whatever reason, matthew has been called the lucky one. Inside, a computer flash drive which Law Enforcement say contains the shooters writings. Matthew said he froze. He didnt make a single move. He was afraid to look away. That if he made anything did anything to make the shooter notice him, that he would be shot. So he just sat there. Reporter hes sitting there watching the shooter execute people . Yes. Reporter the man sitting next to her is pastor randy scroggins, here to provide comfort. His daughter lacy also survived. We have showed up to say, violence will not have the last word in roseburg. God will have the last word reporter but even in this house of worship, it appears theres nothing at this moment that could ease matthews pain. He certainly doesnt feel like the lucky one. No words for it. He lived and for that he feels guilty. Reporter well, erin, that was one of the most heartwrenching interviews i have ever been a part of. It carries an enormous emotional interview. Matthew will not be returning to college here. Hes going to take time off this sem mer sister. Hes known for his humor and smile and it will take a while for that part of him to come back. Erin . Simon, thank you very much. A powerful interview. I want to bring informer fbi profiler James Fitzgerald and casey jordan. The shooter could have left this flash drive, right, all of these writings for the police. He could have done it any way he wanted to do it. He chose one person, one randomly, the one with the glasses, the one lucky one, he called them. Why did he do that . Many time these types of shooters choose representationalt representationaltar targets. They also may choose a representational persons life to spare and this person, matthew, perhaps looked like someone from the past, perhaps they had a casual glance to each other walking down a hallway a few days before, maybe sometime in the past and for that reason this was the one person that perhaps the shooter related to and said, you know what, youre going to be the one i spare. I cannot only take life but i can allow life to live and youre going to be the one. What better power trip than someone in that particular situation. Its like playing god. You just heard matthews mother say that the shooter locked eyes with matthew. What does that say to you . I think hes demanding complicity. Hes making sure that this guy understands that if he gives them this envelope, he will live. But hes not lucky. Hes going to suffer from trauma and survivor guilt its a long road to recover. Because everyone is going to say, well, youre the one, youre the messenger. Why did he pick you . Thats a huge burden for a young man, an 18yearold to carry. I dont consider him lucky at all. He probably picked him randomly but there was probably something about matthew that he would be complicit and not try to fight back and do exactly what he told him to do. The shooter asked if they were christians. But it didnt matter, he fired anyway. So why did he even ask . Religiocity had no bearing on anything here. It was about command, conquest and kill. I know some were allegedly shot in the legs and only injured by this person but this is all about a power trip, all about his 15minutes of fame which, of course, had took him 15 rounds of ammo, at the very minimum, to accomplish his point. The rules have changed and this is how people go about these things, these people who live in the echo chambers of their own mind and have the only external stimuli is violent movies, video games, whatever, websites and they get access to weapons and Something Like this is what happens. Casey, one survivor said that a woman who was in the wheelchair got shot. She was told to get out and then get back in and thats when he shot her and he seemed happy and even laughed. No mercy, no compassion. By the time this young man decompensated to the point that he was ready to go to where hes able to do it hes in a zone. Autopilot, numb, these are too soft of words. Hes like a robot. And hes trying to make a point. Society did this to us, everyone has to die. Im going to die, too. And im just going to leave you with this final message on my way out of town, everything is unfair, everything is bad and wrong. Im sure that whatever is in that flash drive will give us a clue. James, he also told victims he wanted to make it quick and easy. How does that fit with what casey is saying . Well, it fits also in that he wants to make sure that the situation itself doesnt get out of control and they have a chance of taking a shot back at him. I mean, in some physical sort of way. But he wants someone to see pain and suffering. This is what he has perceived took place in his own life over the years and that was his turn to dish some of this back out in the most bizarre and morbid of ways. Casey, james, thanks to you. Next, donald trump tweeting about marco rubio, calling him a boy. Is the frontrunner getting more read. And an American Airlines pilot dies. Medical emergency, staff has been incapacitated. Request handling for runway one zero landing. Ting more. But achieving the right outcomes has never been more difficult. Xerox engineers a better way for people, process and technology to work together. Improving how the world shops, travels, pleases customers, learn