423d CES Change of Command
U.S. Air Force Col. Richard Martin, left, 423d Air Base Group commander, presents the Meritorious Service Medal citation to Lt. Col. Hans Winkler, 423d Civil Engineer Squadron commander, during a change of command ceremony at RAF Alconbury, England, June 22, 2022. During his command, Winkler led a multinational workforce of 196 military and civilian personnel in the sustainment, maintenance, repair, fire protection and emergency services for 697 facilities across a two-installation and 916 acre complex. (U.S. Air Force photo by Staff Sgt. Eugene Oliver)