i want to bring in matthew walker, a 17-year-old jr. at un. matt, we're glad you're okay. tell us about your afternoon. >> i was in class. it's the last period of the day. i was just doing my work, kind of near the end of the bell. out of nowhere i hear banging in the hallways. i just thought it was some kid messing around but it got louder and louder. the guy started shooting through like the little window, through the door. it was really loud. there were bullet holes everywhere. everyone was freaking out. >> can i stop you there, matt. could you see the shooter? >> i did not see the shooter but i did -- he did shoot through my class. >> he shot into your classroom. was anybody hit? >> yes, there were kids injured, but he couldn't get inside because the door was locked but he was shooting through the glass. >> could you tell how far away he was from the door? >> i cannot. i cooperauldn't see him. >> about how many shots did he fire into the classroom? >> i'd probably say 10 to 12. a lot. >> those 10 or 12 shots, even though i'm sure it happened quickly, it must have felt

matthew walker is a junior high school pe teacher.ld you be inconvenienced if you couldn't bring in a bag to a theater? >> no. i wouldn't. today's society that we're living in, i mean, you have to take the precautions to prevent things from happening and for everyone that is coming into that theater to watch a movie you want them all to be safe. and if you have to check a bag here and there to make sure that everybody that is coming in to watch that movie, i think it is a good thing. it is like going to nfl games. you have to come in with a backpack that is clear so they can see through it. >> uh-huh. >> so going to the movie with your family, i think it is a good idea. >> reporter: now, when you go to a theater or an enclosed space, a public place, are you vigilant? do you watch the exits? do you have an escape planned in are with he at that point in our lives. >> yes, we are. when i go to the movies, i'm sitting close to the first exit. not only do i want to be able to get myself out but help others out in case something happens. >>

one of the kids, matthew walker, he was videotaping through it. that's where one of the videos comes from, in my classroom. he took a picture of the laptop at the end, and that laptop was at my desk, and it had three bullet holes through it. >> this is just all so chilling. we just pray for you, that you're going to be able to go back and function after all of this in high school. you should never have to have endured all of this. i'm so glad that you survived and your sister was the voice of calm throughout all this and that you guys were reunited. thank you so much for being with us. >> thank you. >> thank you. >>> so there is a little bit of positive news to share with you here in parkland. overnight two people who were injured in this shooting were released from the hospital, which is obviously good news. it means they'veover come their injuries and they can convalesce back at home. but the police say the killer who caused all this carnage has actually confessed to them to carrying out this attack. broward county sheriff is releasing a timelin