U.S. Air Force Maj. Gen. Scott Zobrist, 9th Air Force commander, shakes hands with Airman 1st Class Michael Gradecki, a 20th Aircraft Maintenance Squadron crew chief, as he prepares for takeoff at Shaw Air Force Base, S.C., Dec. 1, 2016. Zobrist assumed command of 9th Air Force in May 2016 and has held staff positions at the Air Staff, Air Combat Command and U.S. Forces Japan. (U.S. Air Force photo by Airman 1st Class Kelsey Tucker)