A KC-135 crew from the 10th FLTS works closely with Air Logistics Center maintenance professionals during a pre-flight inspection on a jet fresh from the depot. Engine mechanic Matt Jennings, 564th Aircraft Maintenance Squadron, looks over an area while pilots Maj. Kelly Buck, left, and Maj. John Cary test every aspect of the jet’s functions. The meticulous pre-flight may take up to three hours before the aircraft is tested in the air to ensure its air-worthiness.(Air Force photo by Margo Wright)