Gen. Gary North (left), Pacific Air Forces commander, presents Lt. Gen. Ted Kresge, a 1999 Troy University alumnus, with the 13th Air Force unit flag during the a change of command ceremony at Joint Base Pearl Harbor-Hickam, Hawaii, on Dec. 10. Gen. Kresge previously served as the commander of the U.S. Air Force Warfare Center, where he was responsible for shaping the way the Air Force fights through operational training, tactics development and advanced training in air, space and cyberspace.