KIRKUK AIR BASE, Iraq -- Staff Sgt. Joseph Crow and his military working dog, Rico, wait for the "aggressor" during a training exercise. The training has paid off as Sergeant Crow and Rico have caught 26 "bad guys" in the Kirkuk area. Sergeant Crow is assigned to the 506th Expeditionary Security Forces Squadron. (U.S. Air Force photo by Tech. Sgt. Christopher Gish)