TWILIGHT TATTOO Defense Secretary Leon E. Panetta, center, Army Secretary John M. McHugh, Army Chief of Staff Gen. Ray Odierno and Army Gen. Martin E. Dempsey, far right, chairman of the Joint Chiefs of Staff, stand for honors during Twilight Tattoo, a military pageant, at Whipple Field on Joint Base Myer-Henderson Hall in Arlington, Va., Aug. 8, 2012. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 695663-N-DWU90-301.jpg Photo Gallery