PASSAGE PERFORMANCE The United States Marine Corps Drum and Bugle Corps performs during a Passage of Command ceremony at the Marine Barracks, Washington, D.C., Oct. 22, 2010. Marine Corps Gen. James T. Conway relinquished command as commandant to Gen. James F. Amos in a ceremony presided over by Defense Secretary Robert M. Gates. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 365130-T-VEZ45-986.jpg Photo Gallery