Col. Rodney Lewis, 319th Air Base Wing commander, hands the 319th Medical Group guidon to Col. Therese Bohusch, the new 319th MDG commander, during a change of command ceremony on Grand Forks Air Force Base, N.D., July 24, 2015. Bohusch assumed command from Col. Terri Bailey. (U.S. Air Force photo by Senior Airman Xavier Navarro/released)