250226-F-DR389-2074
Staff Sgt. James Sullivan, left, a 726th Air Mobility Squadron C-17A Globemaster III crew chief, and Staff Sgt. Terry McGivern, a 726 AMS heavy integrated avionics craftsman, purge a liquid oxygen service hose before connecting it to a C-17A Globemaster III aircraft on Ramstein Air Base, Germany, Feb. 26, 2025. Purging servicing hoses prior to connecting to aircraft, reduces the amount of foreign object debris introduced into the aircraft’s liquid oxygen system. Liquid oxygen has many applications onboard aircraft such as breathing oxygen for aircrew and passengers in emergency situations, High Altitude Low Opening operations, and Aeromedical Evacuation purposes. (U.S. Air Force photo by Staff Sgt. Joshua T. Crossman)