Lt. Colonel Dave Grossman discusses the need to prepare your mind, body, and spirit for battle. If you do, a warrior can withstand anything. Col. Grossman is a former West Point psychology professor, Professor of Military Science, and an Army Ranger who has combined his experiences to become the founder of a new field of scientific endeavor, which has been termed “killology.”
http://www.military1.com/all/video/284226-bulletproof-mind-how-to-withstand-anything
Please note several other short videos with other important subject matter below this clip:
