U.S. Air Force Col. Edward Lagrou, 52nd Medical Group commander, left, gives the ceremonial guidon to U.S. Air Force Lt. Col. Nisa Pistone, incoming 52nd Medical Operations Squadron commander, during the 52nd MDOS change of command ceremony on Spangdahlem Air Base, Germany, June 19, 2018. (U.S. Air Force photo by Senior Airman Dawn M. Weber)