Senior Airman Jacob Burrell performs the head tilt-chin-lift technique to Senior Airman Scott Allen, both 921st Contingency Response Squadron Air Transportation Flight during self-aid and buddy care during field craft training April 1, 2016, at Travis Air Force Base, California. The five day training course was designed to improve how contingency response Airmen are trained in air base opening combat skills. (U.S. Air Force photo by Staff Sgt. Robert Hicks/Released)