Hydraulics Airmen inspect boom
Staff Sgt. Shawn Mason, 22nd Aircraft Maintenance Squadron hydraulics shop craftsman, services the surge boots on the boom of a KC-135 Stratotanker, Aug. 13, 2015, at McConnell Air Force Base, Kan. Properly maintained surge boots allows the boom to extend and retract smoothly when not transferring fuel. (U.S. Air Force photo by Senior Airman Victor J. Caputo)