So today I was in a lecture with Retired Army Ranger Lt. Colonel Dave Grossman, called The Bulletproof Mind: Mental Prep for Combat. It was an excellent lecture. I recommend everyone who hasn't already, either sit in on one of his lectures, or get his audio tapes, or books. extremely intelligent man with a lot of experience, and tips and tricks to prepare yourself for the use of deadly force, and how to mentally survive after using deadly force.