U.S. Air Force Staff Sgt. Kenneth Houston, 9th Security Forces Squadron military working dog handler, tries to evade a K-9 during a training scenario at Beale Air Force Base, Calif., June 12, 2012. Handlers routinely conduct scenario training to recognize what they may encounter in the field. (Courtesy photo by Noelle Hoffman)

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Photo by: Noelle Hoffman |  VIRIN: 120612-F-BB999-001.JPG