CNN CNN Newsroom March 18, 2013 19:07:00
>> well, this was almost like a training video for him. because what he was doing, he was what we call tactical reload. before he would enter a new classroom, he would drop that magazine even if he had half of a magazine left, reload with another magazine before entering that room. >> which is what he did in a game? >> which is what you do in a game tact particularly. almost like police training he received through the video games. but you think about it, you go into the classrooms with these little kids, there is no threat. but in his mind, he was perceiving a threat. >> and that's why he did...