There's a very interesting discussion running over at PDB's joint regarding preparedness in a victim disarmament zone. Here in Knoxville there are lots of folks who, via working at the University or out in Oak Ridge, spend their days in what PDB referred to euphemistically as "non-permissive environments". This was the catalyst for his question "What's in your Manpurse?"
Some of the stuff I thought was obvious; good first aid gear and the like. Others made me smack myself on the forehead and wonder "Why didn't I think of that?", like a couple of rubber doorstops. Professor Librescu would probably rather have left a doorstop behind and been a live witness rather than a fallen hero. (Personally, I think it would have been nice if he'd been allowed to be a hero by shooting the killer instead of by dying valiantly, but that's another conversation altogether.)
Anyway, go check out the discussion. There's some outside-the-box thinking going on.