Allegations he abused his exwives. Congress is now investigating why rob porter and dozens of other white house staffers have yet to obtain permanent security clearances. Plus dr. Tara narula shows how your workplace could be a breeding ground for the flu. What you can do to reduce your chances of getting sick. But we begin this morning with a look at todays eye opener, your world in 90 seconds. I saw blood everywhere. Everybody was panicking, screaming, crying. I dont know how were alive. The nation mournses after another School Shooting. Unbelievably catastrophic day. Its devastating. Im sick to my stomach. This is absolutely pure evil. The shooting is once again bringing the gun control debate front and center. We are responsible for a level of mass atrocity that happens in this country with zero parallel. President trump has denounced Domestic Abuse for the First Time Since a tom aide was accused of abuse. Im opposed to abuse of any kind. Ebb knows that. A 4yearold is found safe and sound. A 2yearold girl jumped on the tracks in it will. A teen jumped in and saved the child. Talk about being at the right place at the right time. And all that matters. Gold for mikaela shiffrin. She won the final run after trailing by 20 seconds. On cbs this morning. From everybody in the community, we come together as one to try to get past it. We have to move forward arm in arm. This has been a day weve seen the worst in humanity. Tomorrow is going to bring out the best in humanity as we come together to move forward from this unspeakable tragedy. Announcer this mornings eye opener presented by toyota. Lets go places. Welcome to cbs this morning. Once again the community is waking up asking how does it happen here. We know this story. Heres the latest of what we have from florida today. We have new information about those terrifying moments before one of the Deadliest School shootings in u. S. History. This rampage has set parents in shock and south Florida Community in agony today. Police say a former student killed 17 people and wounded more than a dozen otheret at Marjory StonemanDouglas High School in parkland. We just learned the names of two of the students. Assistant football coach and Security Guard aaron feiss was also killed in the shooting. He was actually shielding students when he was shot. The suspect nikolas cruz was charged with 19 counts of premeditated murder this morning after being taken to the county jail. He brought an a. R. 15 semiautomatic rifle and magazines. He wore a gas mask and carried smoke grenades. Cbs news jeff glor is at the school in parkland. Good morning. Reporter good morning. This remains a busy numb scene. This is a huge campus, ten classrooms behind us. Investigators worked throughout the night as weve watched them gathering evidence at Stoneman Douglas high as it remains a crime scene. Its closed today and tomorrow. All School Activities are canceled the rest of this week. Police say the gunman started his rampage outside the school and went inside and fired more shots. Hundreds of students fled. Students say he concealed himself in the crowd. Some of the students saw classmates die right in front of them. Many of the horrific moments were captured on cell phone camera. We have to warn you some of the footage you see is graphic. Oh, my god, oh, my god. Reporter the gunshots starting ripping through the high school around 2 15 wednesday. Heavy Police Arrived minutes later. The suspect is going to be possibly a white male, nicholko cr cruz. He was identified as a 19yearold who had been expelled from the school. He killed two people outside. Once inside he apparently pulled a fire alarm causing chaos, then began shooting. 12 people died inside the school. Broward county sheriff scott israel. He had countless magazines, multiple magazines. And at this point, we believe he had one ar15 rifle. Theyre following him on video, camera, they had him skpitding the building running south. Police were able to track him in part using the schools surveillance cameras. He was captured about an hour after allegedly opening fire. S. W. A. T. Teams went room to room. Frightened students ran down the hallways stepping over discarded backpacks. He went up and down the hallway banging and shooting through classrooms. He shot my classroom and through the door. In a voice mail sent to parents in palm beach county, the superintendent there asked parents and students if they see something to say something. If the accounts are correct, this individual was posting things on social media that should have been a red flag. Broward county superintendent robert runcie. Words cannot express the sorrow that we feel. No parents should ever have to send their kids to school and not return. We to find a way to get this to stop. Reporter state flags in florida are at halfstaff to honor those who died yesterday. President trump offed sympathy on twitter aegd, quote, no child, teacher, or anyone else should ever feel unsafe in an american school. Manuel bojorquez is here this morning as well and has new information. Good morning. Reporter good morning. As we mentioned at the top of the broadcast, we are learning the named. Jamie guttenberg and the football coach also died. One of the deputies own sons was shot and is in stable condition. Both the students and staff that weve spoken with here are expressing a combination of near over what happened, of shock, and of being thankful to be alive. I dont know how were alive. Reporter freshman brun Bruna Aleveda said she witnessed her teacher and classmates get shot. In those 30 minutes we were like praying and crying and then the police came and we just got out. Reporter students and teachers barricaded themselves inside classrooms to take cover. Sophomore nicole healy describes the carnage she saw as s. W. A. T. Led her to safety. On the way to getting evacuated, you saw two dead bodies on the floor. Reporter there were tearful reunions as loved ones arrived to make sure they were okay. Feel for the parents and children. Im one of these parents and certainly not feeling so good right now. Reporter Broward County sheriff scott israel. Im absolutely sick to my stomach to see children who go to school armed with backpacks and pencils lose their lives. Ran as fast as i could and i made sure all my friends were around me. I made sure we were all safe. Reporter senior Hector Navarro escaped through a field with a group of more than 60 students. He believes a friend of his is among one of those victims. I know together as a family, a school, as a whole, we can get through it. Reporter a trauma that clearly will forever be etched in their minds. Jeff, officials here say they will not be releasing a full list of the victims names until all members can be properly notified. I know you were here all yesterday and will be there today. Thank you very much. Friends and students that weve talked to have told us a lot more about this shooter from what weve heard so far. Were going to have more on that in just a moment. Just a little while ago, i did speak with jim gard whos a math teacher. He locked himself and several students inside his classroom during what was happening and he talked about what happened yesterday afternoon. Right around 2 20, i heard the fire alarm go off, so i told the kids, i said, hang out for a second. This could be something accidental. Then we got an announcement that said, okay, evacuate the building about ten seconds later. I opened the door, the kids took off. The kids were great. They were very orderly. As i was ready to leave, we hear all these popping sounds. It sounded like firecrackers and we heard mr. Porter came on again and said code red get back in the room, so i yelled to the kids, i go, lets get back in here. There were five or six kids, i got them right back in. They asked what was happening. I said, i dont know. Lets assume its a drill. And really 20 minutes later we knew it wasnt. So the kids went where . They were in my room. Now, all the other kids what i did was went on my email and a lot of teachers were emailing these children are with me, these children are with me and these are who i dont have. I put all who i had and the others who were absent and the others who were missing to try to find out where they are. The other kids had cell phones. We were all texting and the ten of the 13 the other three we didnt know but we found them later on at 4 00 we got relief. Were hearing stories about many teachers like you who tried to protect the students, in some cases took them in closets, in some cases may have shielded these students. Can you talk about your fellow teachers and how theyre doing this morning . I only know that our i dont know what news is out there or what names is out there, but one of our teachers was apparently well two of them was shot and killed while standing in front of kids. I dont know if his name is out. It doesnt surprise me. Ive known him since i got here in 2008. He was fantastic. He went here. He was an eagle. He was a great guy. Friends and students are describing to us the suspect as a troubled violent teenager before he was kicked out of Stoneman Douglas high. One student who knew nik cruz said he had threatened other students and overnight the fbi began searching the home here where cruz live. Thats where Jericka Duncan is this morning. Good morning to you. Reporter good morning, jeff. The house youre talking about is behind me and around the corner. Thats where cruz was most recently staying. According to the attorney for the family, he was there for a month and a half. He had been bouncing around since the death of his mother back in november. As you mentioned students and friends were surprised by all this. They knew cruz had a troubled past. But they never thought this 57, 130pound teen was capable of such a massacre. As investigators searched through the home where nikolas cruz lived, new details are emerging about the 19yearolds unsettled past. They let him live here because he didnt have somewhere to live. Reporter the Attorney Says the family gave him a place to stay. They cant believe someone who lived in their home for this relatively short period of time was capable of such a horrible, horrible act. Reporter cruz was getting an education and worked at the dollar store as a cashier. He illegally purchased the ar15 used in attack. After the shooting students described cruz as a loaner who struggled in school. A lot of people were saying it was going to be him. A lot of kids said he would be the one to shoot up the school. It turns out, you know, everyone predicted it. Reporter paul gold lived next door to cruz in parkland and said the death of his adopted mother had a major impact. At times he had so much anger inside of him. Reporter cruz complained about being bullied and picked on at school. Kids mistreated and obviously he wasnt given the best hand in line. When you see that picture, how does it make you feel . It makes me sick. It makes me sick to think he would do Something Like that. Reporter gold says cruzs adopted mother had him in counseling but that that ended after her death. Meanwhile cruz is being held right now at the Broward County sheriffs office. Jeff . Jericka, thanks. For now, Fran Townsend is with us. Sh is our cbs News Senior National security analyst. She was Homeland Security and counterterrorism adviser for president george w. Bush. Welcome, fran. What are investigators trying to find out about the shooter . They want to understand both his mental history. We know there was this report from a video blogger on youtube back in november identifying cruz to the fbi. Difficult when i say identifying, he identified the comment. He was interviewed. The video blogger asked if he knew him. He said, no, he didnt know him. It was reported but taken down. It reports to a host of issues. For one, when we think of Homeland Security, we think of terrorism issues, natural disasters. We dont think of School Shootings. Right now when you think of this, this is the 18th scoot sh School Shooting. Last year we had sneechb do we need to rethink what Homeland Security really means . I think thats exactly right, gayle. Imagine for a moment, if the shooter was a muslim, we would be having a different kind of conversation. How wrong does that feel . This ought to be at the top of the list of home zurt threats bus we have an obligation to protect our children. Even if we have a political difference, its time to put that aside. Im surprised about the ar15. They cost about 2,000. Thats a lot for a person working at a dollar store. The ar15 has been used in six of the deadliest massacres. Newtown, san bernardino, pulse shooting in orlando, sutherland springs. Do we need to have changes at the atf about who can buy this weapon . Look, norah. You know better than anybody. There has been debates about put ing the Assault Rifle was really intended for military use, right . I think of that from my time in government being the u. S. Military overseas. We understand people in Law Enforcement have an absolute need for it. We had an assault weapons ban. It expired. And the politicians in washington dont seem to be having that. Should a 19yearold kicked out of school be able to buy that gun is the question. The one other issue i want to raise this morning is the social media companies. In this case, youtube should have taken that comment down that identified him. Just to clarify, that comment, im going to be a professional shooter. Right. They took that down, but they need to do more, right . They need to provide resources, people who go hunting on their networks, youtube, facebook, instagram. Find this stuff they dont just take it duh but take it down and present it to Law Enforcement so they can prevent it. The man who saw it said he took it to the fbi and was interviewed. But did it go anywhere else from there . Did anybody follow up with nikolas cruz . We dont know if they could identify him. Thats kmorn name. Did they understand he had other social media accounts that might have triggered more concern. Thank you, fran. Thank you. President trump broke his silence on Domestic Violence a week after an aide resigned amid spousal abuse allegations. 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See flames shooting from a second floor window of the home 100 block of fern street. Fire broke out at 2 00 this morning and spread to two other homes. Red cross is assisting anyone displaced by the fire. Lets send it over to katie for a check of the tore cast, has the rain moved out, it should be mild too. We are seeing bulk of any wet weather make a full exit and thin out, at least, rahel, includeds wilson and we will should see sunshine as day progresses but you are very, very mild outside, take a look at our project high, we will be two months ahead of schedule on that day time high , might as well be april for you but fresh showers this evening and overnight in the first half of tomorrow and a separate system comes long saturday night bringing potential for wintry mix, meisha. Those wet red ways has posed some problems and they still are, very slow. Call your attention to mount laurel, new jersey we have a pedestrian accident here so 73