Angel Thunder
U.S. Air Force Airman 1st Jack Crosby (left), 23rd Communications Squadron radio frequency transmissions systems, and Senior Airman Bradley Douglas (right), 23rd Communications Squadron airfield systems, pack up equipment after the Angel Thunder exercise at Davis-Monthan Air Force Base, Ariz., April 22, 2013. Angel Thunder is the world’s largest most realistic, joint service, multinational, interagency combat search and rescue exercise.(U.S. Air Force photo by Airman 1st Class Josh Slavin/Released)