Watch out below
A U.S. Air Force pararescueman from the 58th Rescue Squadron out of Nellis Air Force Base, Nev., performs tree let-down procedures May 5, 2014, at Camp Navajo, Ariz., in part of Angel Thunder. Davis-Monthan Air Force Base, Ariz., conducted the first Angel Thunder in 2006 as a base-specific exercise. It has since grown to be the largest and most realistic joint service, multinational, interagency combat search and rescue exercise in the world. (U.S. Air Force photo by Staff. Sgt. Jamal D. Sutter/Released)