He doesn’t know he is a target. That killer with his own AR shoots him from concealment and walks into the school. You have to have at least two of these guys on campus and that is getting even more expensive. Why cannot even Freepers accept the obviouis and probably only sensible and certainly the cheapest solution- allowing teachers and staff to carry?
The hell he doesn't. The simple fact that he's there in a school full of kids MAKES him a target.
I've got nothing against allowing teachers and staff to carry, but that is not the only solution, nor should it be.