Master Sgt. Chris Hughes, 22nd Maintenance Squadron hydraulics craftsman, performs an acceptance inspection on a KC-46A Pegasus boom Feb. 14, 2019, at McConnell Air Force Base, Kan. Hydraulics Airmen are responsible for internal repairs, which can include fuel supply, electrical, mechanical and hydraulics systems of the aircraft. (U.S. Air Force photo by Airman 1st Class Alan Ricker)