Col. Greg Krane, 101st Air and Space Operations Group commander, takes the ceremonial flag from Lt. Gen. Marc Sasseville, Continental U.S. North American Aerospace Defense Command Region - First Air Force (Air Forces Northern) commander, during the 601st Air Operations Center change of command ceremony at Tyndall Air Force Base, Florida on Sept. 26, 2019. The passing of the flag symbolizes Krane's acceptance of command of the 601st AOC. (U.S. Air Force photo by Senior Airman Cheyenne Larkin)