Drop and Stop: I take it you're of the Shoot first ask questions later school of thought. So you discover Steven Smackhead in your house and you're armed. What do you do? Blow his head off on the off chance he's the local axe murderer? Your family'll thank you for that as you're escorted off to the clink for the rest of your life. Surely the threat of force should be enough. If, of course, the guy is high on crack and appears to be armed and threatening then yeah blow his brains out. You'll probably be doing him a favour anyway.