Sgt. 1st Class Carlos M. Santos-Silva, 32, of Clarksville, Tenn., died March 22 in Kandahar province, Afghanistan of wounds suffered when enemy forces attacked his vehicle with an improvised explosive device. He was assigned to the 2nd Battalion, 508th Parachute Infantry Regiment, 4th Brigade Combat Team, 82nd Airborne Division, Fort Bragg, N.C.