Senior Airman Brandon Marlow, 96th Aircraft Maintenance Unit crew chief, checks under the wing of a B-52H Stratofortress during a preflight inspection on Barksdale Air Force Base, La., Dec. 12. During preflight inspections, crew chiefs check the exterior and interior of aircraft for any abnormalities. (U.S. Air Force photo/Airman 1st Class Benjamin Gonsier)
Senior Airman Brandon Marlow, 96th Aircraft Maintenance Unit crew chief, pumps air into the hydraulics reservoir of a B-52H Stratofortress on Barksdale Air Force Base, La., Dec. 12. Air is pumped into the hydraulics reservoir to drain out excess fluid. Not enough pressure inside the hydraulics system may cause the fluid inside to move around, drain out or be distributed unevenly to other systems during flight. (U.S. Air Force photo/Airman 1st Class Benjamin Gonsier)