U.S. Air Force Staff Sgt. Arthur Christenson, 52nd

U.S. Air Force Staff Sgt. Arthur Christenson, 52nd Aircraft Maintenance Squadron electrical and environmental specialist, checks electrical components of an F-16 Fighting Falcon during a mission generation assessment at Spangdahlem Air Base, Germany, May 14, 2019. Electrical and environmental specialists ensure all of the F-16's electrical systems are functioning properly so they fly safely and effectively. The specialists also maintain the aircrafts oxygen system to give pilots breathable air. (U.S Air Force photo by Staff Sgt. Preston Cherry)