certain types of activity -- or certain types of problems in their lives who demonstrate certain types of behavior. we can't just look at it anymore and say, well, i don't want to get involved with what's going on. >> and of course we don't know the motive here. we don't know why the shooter targeted this particular church. and that's a big problem, isn't it? trying to figure that out. but when you talk about mental health, does that answer half of that question? that's a good way of saying i used to tell the agents who worked under me if you understood why you did this, you would be mentally ill. the profilers help us in understanding the way people with certain mental health problems will act. and we have to understand that they will go after certain targets. i suspect that from my experience you're going to find