U.S. Air Force Staff Sgt. Alexandra Springman, 355th Security Forces Squadron, military working dog handler, accepts a certificate of meritorious service on behalf of Dexter, 5 years old, 355th SFS military working dog, from Maj. Douglas Whitehead, 355th SFS commander, during his retirement ceremony at Davis-Monthan Air Force Base, Ariz., Feb. 19, 2014. Dexter has served as a patrol and explosive detection dog since joining the AF in October 2009. (U.S. Air Force photo by Airman 1st Class Chris Drzazgowski/Released)