If they carried sidearms, you wouldn't have people trying to shoot them up, and if they did, they would like not be in jail like that a-hole Hassan who should have been at room temperature on the same day he killed people.
I saw this at Dover AFB a few years back, and it just pissed me off:
Looks like “get trapped in place” to me.
SIP sign on door. Translation: “Hey maniac, you’ll find a bunch of unarmed people in here.” What an absolutely idiotic idea.