U.S. Air Force airmen from the 355th Medical Group wait to load a victim of a simulated aircraft crash during Angel Thunder at Davis-Monthan Air Force Base, Ariz., April 13, 2013. Angel Thunder provides personnel recovery and combat search and rescue training for combat aircrews, pararescuemen, intelligence personnel, battle managers and joint search and rescue center personnel. (U.S. Air Force photo by Senior Airman Timothy Moore/Released)