Airman 1st Class Casey McNamara of the 121st Air Refueling Wing seats a connector on the engine of a KC-135R Stratotanker Feb. 15, 2017, at Rickenbacker Air National Guard Base, Ohio. McNamara was performing an acceptance inspection on the aircraft which had recently returned from depot level maintenance. (U.S. Air National Guard photo by Senior Master Sgt. Ralph Branson)