After assuming command of the 145th Operations Group, U.S. Air Force Col. Joseph H. Stepp IV is congratulated by Brig. Gen. Roger E. Williams, Jr., Assistant Adjutant General – Air, during a change of command ceremony held at the North Carolina Air National Guard Base, Charlotte Douglas International Airport; June 6, 2015. (U.S. Air National Guard photo by Master Sgt. Patricia F. Moran, 145th Public Affairs/Released)