This book was written by order of the Secretary of the Army. Sergeant First Class Matt Larsen is a longtime trainer in survival and fighting techniques for the Army Rangers. A graduate of the multi-service SERE (Survival, Evasion, Rescue, and Escape) training program and of Jungle Survival Training in the Philippines and Okinawa, he served in the 75th Ranger Regiment for over twelve years, parachuting into Panama during the 1989 U.S. invasion and participating in the Gulf War.