>> from his fourth floor apartment chris johnson watches as terrified drivers swerve to avoid the gunman. >> he's roaming the streets, methodically shooting at anything that moves. >> security at john's building has already called 911, but with no sign of police, john opts to create a diversion using himself. >> at that point something went off in my head. i said, what can i do to distract this guy. i immediately started shouting, hey, you madman. >> madman! why don't you come up here. come on up here, buddy. shoot me. i want to die. shoot me. i'm ready to die. kill me, i want to die! please, ...