Angel Thunder

U.S. Air Force pararescuemen with the 58th Rescue Squadron signal in a HH-60 Pave Hawk helicopter assigned to the 66th Rescue Squadron for extraction during a search and rescue mission at exercise Angel Thunder in Tucson, Ariz., Oct.18, 2011. Angel Thunder is an Air Combat Command-sponsored personnel recovery/combat search and rescue exercise with approximately 1,400 participants from U.S. military, federal and state agencies and coalition forces. (DoD photo by Staff Sgt. Andy M. Kin, U.S. Air Force/Released)

U.S. Air Force pararescuemen with the 58th Rescue Squadron signal in a HH-60 Pave Hawk helicopter assigned to the 66th Rescue Squadron for extraction during a search and rescue mission at exercise Angel Thunder in Tucson, Ariz., Oct.18, 2011. Angel Thunder is an Air Combat Command-sponsored personnel recovery/combat search and rescue exercise with approximately 1,400 participants from U.S. military, federal and state agencies and coalition forces. (DoD photo by Staff Sgt. Andy M. Kin, U.S. Air Force/Released)