Keeping the Fighters in the Fight
114th Aircraft Maintenance Squadron engine shop Airmen remove the engine of an F-16 during the De-paneling Phase of a phase maintenance inspection at Joe Foss Field, July 8, 2017. Each aircraft is required to go through a phase inspection every 400 flight hours to ensure all systems are functioning within Air Force regulations. (U.S. Air National Guard photo by Master Sgt. Christopher Stewart/Released)