43rd Electronic Combat Squadron
U.S. Air Force Senior Airman Alexander Klonowski, 43rd Electronic Combat Squadron aircrew flight equipment technician, fits Master Sergeant Michael Wiest, 43rd ECS cryptologic language analyst, for his helmet and mask at Davis-Monthan Air Force Base, Ariz., March 20, 2013. Helmets and mask are fitted once, with no expiration date, but are also inspected by an aircrew flight equipment member after every flight and every 90 days per Major Command. (U.S. Air Force photo by Senior Airman Camilla Griffin/Released)