U.S. Army Sgt. Clevaun Fluellen, 3rd Military Police Detachment dog handler, says his goodbyes to Duuk, 3rd MP Det. explosives detection military working dog at Fort Eustis, Va., Sept. 9, 2013. Duuk was adopted after eight years of military service. (U.S. Air Force photo by Airman 1st Class Austin Harvill/Released)