U.S. Army Gen. Robert Cone, outgoing U.S. Army Training and Doctrine Command commander, passes the unit colors to Gen. Raymond Odierno, U.S. Army chief of staff, during a change of command ceremony at Fort Eustis, Va., March 14, 2014. This ceremony represented Cone’s final duty assignment before his retirement. (U.S. Air Force photo by Senior Airman Teresa J.C. Aber/Released)