Army Spc. Thomas Diamente, 221st Military Police Detachment, prepares to release Chico, military working dog, during a demonstration at Fort Eustis, Va., April 12, 2011. Fort Eustis military working dogs patrol and maintain safety while supporting select government functions, and deploy to contingency operations. (U.S. Air Force photo by Airman 1st Class Kayla Newman/Released)