Senior Airman Cameron Nixon, 80th Fighter Squadron aircrew flight equipment technician, disinfects a part of the flight helmet oxygen mask at Kunsan Air Base, Republic of Korea, Nov. 8, 2021. The HGU-55/P flight helmet includes an oxygen mask, night vision goggles and a heads-up display unit, which projects flight information onto the pilot’s visor. (U.S. Air Force photo Staff Sgt. Jesenia Landaverde)