text: Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, and his wife, Deborah, speak with U.S. Army Col. Gregory Gadson and his wife, Kim, during the 2011 USO Metro Awards Dinner in Pentagon City, Va., April 12, 2011. Gadson lost both of his legs in an improvised explosive device attack in Iraq in 2007. DOD photo by U.S. Navy Petty Officer 1st Class Chad J. McNeeley