CNN Anderson Cooper Special Report August 10, 2013 09:49:00
That alerted authorities. i lived with him and have seen his suicide note written on his wall at home. and he has personally told me about plans he has to do mass public shootings. what were your immediate concerns as soon as you got there? >> as i'm pulling up to the scene, there's a private school across the street. >> reporter: the police special response team surrounds the area, as millian begins talking to rosario. >> he had on body armor when i was talking to him through the window. i saw the butt of a rifle. so i knew danger was there. >> reporter: and he knew rosario suffered from ment...