U.S. Air Force Col. Christian Lyons, 20th Medical Group commander, left, hands the guidon to Lt. Col. Jamale Hart, incoming 20th Healthcare Operations Squadron commander, at Shaw Air Force Base, South Carolina, June 21, 2019. Airmen with the 20th Health Operations Squadron keep Team Shaw fit to fight. (U.S. Air Force Airman 1st Class Kaitlyn Brewer)