Air Force Maj. Gen. Richard Clark, Eighth Air Force commander, hands over the wing guidon to Brig. Gen. Paul W. Tibbets IV, 509th Bomb Wing commander, during the change of command at Whiteman Air Force Base, Mo., June 5, 2015. Presentation of the guidon to Tibbets symbolizes the official change of command from the old commander to the new commander. (U.S. Air Force photo by Staff Sgt. Alexandra M. Longfellow/Released)