U.S. Air Force Staff Sgt. Giancarolo Cintron, a 521st Air Mobility Operations Wing hydraulics regional training center instructor, uses a hydraulics machine to control the levels of fluid going into aircraft jacks as they lift a C-5 Super Galaxy aircraft at Ramstein Air Base, Germany, Dec. 11, 2020. Airmen from Incirlik AB, Turkey, Rota AB, Spain, Spangdahlem AB, Germany, and Ramstein AB learned aircraft maintenance skills while attending the training. The 721st Air Mobility Squadron provides command and control, aerial port, and aircraft maintenance in support of the national military strategy to sustain forces worldwide. (U.S. Air Force photo by Senior Airman Thomas Karol)