U.S. Air Force Col. Steven Van De Walle, 17th Medical Group Commander, passes the guidon to Lt. Col. Achilles J. Hamilothoris, during the 17th Medical Support Squadron change of command ceremony at the Event Center on Goodfellow Air Force Base, June 24, 2016. Hamilothoris replaced Lt. Col. Bernard Vanpelt, former 17th MDSS Commander. (U.S Air Force photo by Airman 1st Class Caelynn Ferguson/Released)