Brig. Gen. Mark W. Graper, 354th Fighter Wing commander, passes the guidon to Col. Karlton Johnson, 354th Mission Support Group commander, during the assumption of command ceremony April 7, 2009, Eielson Air Force Base, Alaska. The guidon symbolizes the relinquishment of authority from the outgoing commander to the incoming commander. (U.S. Air Force photo/Senior Airman Jonathan Snyder)