Aircrew flight equipment checks
U.S. Air Force Airman 1st Class Dallas Galvan, an aircrew flight equipment technician with the 379th Expeditionary Operational Support Squadron, inspects a HGU-55/P helmet and MBU-20/P mask at Al Udeid Air Base, Qatar, May 16, 2017. Aircrew flight equipment technicians work day and night to inspect, repair and modify helmets, combat survivor evader locators, the Scott 358 Quick Don Oxygen Masks, and aircrew survival equipment kits to help keep aircrew members safe. (U.S. Air Force photo by Tech. Sgt. Amy M. Lovgren)