Hurlburt Field Night Maintenance
U.S. Air Force Senior Airman Fernando Kossler, a crew chief at the 4th Aircraft Maintenance Unit, inspects a brake hub before replacing the brakes on an AC-130U gunship at the flightline on Hurlburt Field, Fla., Feb. 20, 2013. Maintenance personnel consisting of crew chiefs with a complement of systems technicians, augmented by Airmen from the 1st Special Operations Component Maintenance Squadron and 1st Special Operations Equipment Maintenance Squadron, normally accompany deployed aircraft. (U.S. Air Force photo/Airman 1st Class Christopher Callaway)