SEMPER FIDELIS U.S Marine Corps Gen. James F. Amos, left, assistant commandant of the Marine Corps, USO President Sloan Gibson, center, Edward T. Reilly, second right, president of the USO board of Governors and Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, congratulate U.S. Marine Corps Sgt. Eric B. Walker, USO Marine of the Year, at the USO Gala at the Marriott Wardman Park Hotel in Washington, D.C., Oct. 7, 2010. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 670182-O-KXM43-754.jpg Photo Gallery