Senior Airman David Humphreys, 96th Aircraft Maintenance Unit aerospace propulsion journeyman, repairs fan blades on an engine of a B-52H Stratofortress on Barksdale Air Force Base, La., Aug. 19, 2013. Humphreys repaired the fan blades by using a process known as "blending," where the edges damaged by object debris are filed down to make a smooth edge. (U.S. Air Force photo/Airman 1st Class Andrew Moua)
Senior Airman Keith Jackson, 96th Aircraft Maintenance Unit crew chief, prepares equipment prior to receiving a landing aircraft on Barksdale Air Force Base, La., Aug. 19, 2013. A crew chief's responsibilities include launching, receiving, maintaining, and refueling aircraft. (U.S. Air Force photo/Airman 1st Class Andrew Moua)
Senior Airman Nicholas Kupferle, 96th Aircraft Maintenance Unit, watches a B-52H Stratofortress prepare to land on Barksdale Air Force Base, La., Aug. 19. For the past 60 years, the B-52 has provided long-range bombing capability and is capable of launching the widest array of weapons in the U.S. arsenal. (U.S. Air Force photo/Airman 1st Class Andrew Moua)
Senior Airmen Keith Jackson, left, and Nicholas Kupferle, 96th Aircraft Maintenance Unit crew chiefs, push an A/M32 diesel generator into position prior to receiving a landing aircraft on Barksdale Air Force Base, La., Aug. 19. The generator provides power to the aircraft prior to take-offs, and after landings, to allow crew chiefs to launch and power down aircraft. (U.S. Air Force photo/Airman 1st Class Andrew Moua)
Senior Airman Nicholas Kupferle, 96th Aircraft Maintenance Unit crew chief, tests an A/M32 diesel generator on Barksdale Air Force Base, La., Aug. 19, 2013. Kupferle tested the generator in order to make sure it functioned properly to provide power to aircraft. (U.S. Air Force photo/Airman 1st Class Andrew Moua)