A few comments on the conversation. 1) I've talked to several Vietnam vets, am currently in the Army, and several of my friends are in the military with multiple deployments. Overwhelming, directed firepower works everytime. 2) Zimmerman shouldn't back down, repent, or show any form of remorse. Doing so only weakens his self defense position because it invokes the notion of doubt. If your going engage someone with lethal force there should be zero doubt before or after. 3) about shooting until the threat is eliminated, you're damn right! As an example, an LEO friend was involved in a single cop vs bad guy armed stand off. After the bad guy drew his weapon my friend shot him 13 times in the chest. I.e. he emptied his mag. if it had required more, believe me there would have been no hesitation.