U.S. Air Force Col. Caroline Miller, 633rd Air Base Wing former commander, relinquishes command to Maj. Gen. Scott J. Zobrist, 9th Air Force commander, during the 633rd ABW change of command ceremony at Joint Base Langley-Eustis, Va., June 22, 2017. Miller served two years as commander of the 633rd ABW. (U.S. Air Force photo by Airman 1st Class Tristan Biese)