"I know thy works, that thou art neither cold, nor hot. I would thou wert cold, or hot. But because thou art lukewarm, and neither cold, nor hot, I will begin to vomit thee out of my mouth." Revelation 3:15-16
Ballseyeboomer has an interesting scenario at his site. I'd recommend going over and commenting. He's definetly got the straight skinny on personal defense, if you're unfamiliar with his site I'd suggest starting off with this.