The U.S. Marine Corps Honor Guard passes in review before Secretary Cohen. The United States Marine Corps Honor Guard passes in review before Secretary of Defense William S. Cohen and Gen. Joseph W. Ralston, U.S. Air Force, vice chairman of the Joint Chiefs of Staff, as the Department of Defense celebrates its 50th anniversary with an armed forces full honor review at the Pentagon, Sept. 17,1997. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 274067-Q-QSQ94-827.jpg Photo Gallery