U.S. Air Force Col. Christopher Bromen, 423rd Air Base Group commander, hands the guidon to Lt. Col. Elizabeth Anne Louise Hoettels who assumes command of the 423rd Medical Squadron at RAF Alconbury, England, June 11, 2019. The Change of Command ceremony represents the official exchange of leadership. (U.S. Air Force photo by Airman 1st Class Gabrielle Winn)