Aircrew flight equipment formula: Safety, training and camaraderie
U.S. Air Force Airman 1st Class William Butler, 509th Operations Support Squadron aircrew flight equipment technician, inspects the pockets of a back automatic-22 parachute to ensure the presence of strobe lights, Whiteman Air Force Base, Mo., Oct. 9, 2013. Strobe lights are used to signal for rescue once the pilot has ejected and is awaiting extraction. (U.S. Air Force photo by Airman 1st Class Keenan Berry/Released)