Retired Army Gen. Gordon Sullivan, right, shakes hands with Defense Secretary Chuck Hagel after introducing him as the guest speaker at the Association of the United States Army Conference at the Walter E. Washington Convention Center in Washington D.C., Oct. 15, 2014. Retired Army Gen. Gordon Sullivan, right, shakes hands with Defense Secretary Chuck Hagel after introducing him as the guest speaker at the Association of the United States Army Conference at the Walter E. Washington Convention Center in Washington D.C., Oct. 15, 2014. SHARE: Download: Full Size (1.22 MB) Tags: photo essays Credit: VIRIN: 600845-R-CYA80-939.jpg Photo Gallery