The Jewel Box, in Phoenix is a sort of pawn shop, and they have a sign on their door that reads, "No guns allowed escept certified police officers.' they had a guy come in one day and ask to look at a knife. the clerk on duty told him the case was locked. He continued to look around the store, and was checking out a circular saw. He asked if he could test it, and she said okay. He plugged it in, pulled the guard back and ran it up to speed, then plunged it into his neck. Just shows you don't need a gun to be dangerous. What if instead of being suicidal he had been a robber or homicidal?