U.S. Air Force Col. Timothy Trimmell, 52nd Maintenance Group commander, left, presents the Meritorius Service Medal to U.S. Air Force Lt. Col. Christopher Pustka, outgoing 52nd Maintenance Squadron commander, right, during the 52nd MXS change of command ceremony at Spangdahlem Air Base, Germany, June 17, 2019. (U.S. Air Force photo by Airman 1st Class Branden Rae)