Airman 1st Class Yousef Sakhnini observes the engines of a B-52H Stratofortress before takeoff Feb. 4, 2015, on Minot Air Force Base, N.D. Sakhnini is a 5th Aircraft Maintenance Squadron crew chief. His job requires him to be in constant communication with aircrew to ensure any discrepancies are identified and fixed before flight. (U.S. Air Force photo/Senior Airman Stephanie Morris)