Airman 1st Class Cesar Batalla Rivera, 52nd Maintenance Squadron aerospace propulsion journeyman, inspects internal components of a jet engine using a borescope at Spangdahlem Air Base, Germany, Feb. 25, 2020. Batalla Rivera checked the engine for discrepancies, which was part of a quality-control check requiring several hours of attention to detail. (U.S. Air Force photo by Airman 1st Class Valerie Seelye)