Staff Sgt. J. Brannon Dubose, 22nd Aircraft Maintenance Squadron KC-46A Pegasus hydraulic systems craftsman, hand-pumps hydraulic fluid into a KC-46 Jan. 7, 2021, at McConnell Air Force Base, Kansas. Due to the contamination, the skydrol in the aircraft was replaced in order to ensure the prolonged use of the aircraft for future air refueling operations. (U.S. Air Force photo by Senior Airman Alan Ricker)