Katya, a military working dog with the U.S. Air Force's 52nd Security Forces Squadron (SFS), awaits the next command from Staff Sgt. Shannon Hennessy, a military working dog handler with the 52nd SFS, March 19, 2014, at Spangdahlem Air Base, Germany.
(DoD photo by Staff Sgt. Chad Warren, U.S. Air Force/Released). Original public domain image from Flickr