Army Chief of Staff Gen. George W. Casey Jr. leaves the East Room of the White House, Oct. 6, 2010, after a Medal of Honor ceremony for U.S. Army Staff Sgt. Robert J. Miller. Army Chief of Staff Gen. George W. Casey Jr. leaves the East Room of the White House, Oct. 6, 2010, after a Medal of Honor ceremony for U.S. Army Staff Sgt. Robert J. Miller. SHARE: Download: Full Size (3.99 MB) Tags: Photo Essays Credit: VIRIN: 504090-G-OXP74-971.jpg Photo Gallery