ENGINE CHECK An airman monitors a KC-135 Stratotanker during an engine check on McConnell Air Force Base, Kan., March 31, 2014. Maintenance airmen work around the clock to provide mission-ready aircraft for mobility operations throughout the day. The airman is assigned to the 22nd Aircraft Maintenance Squadron. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 203131-D-TOP67-452.jpg Photo Gallery