6/19/2012 - Frigo, a military working dog with the 9th Security Forces Squadron, holds on to a suspect during a training scenario at Beale Air Force Base, Calif., June 12, 2012. MWDs are utilized throughout the Department of Defense for detection and patrol. (Courtesy photo by Noelle Hoffman)

6/19/2012 - 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)

6/19/2012 - U.S. Air Force Staff Sgt. Kenneth Houston, 9th Security Forces Squadron military working dog handler, receives a bite from Frigo, during a training session at Beale Air Force Base, Calif., June 12, 2012. Houston is wearing a suit designed to protect him from dog bites. (Courtesy photo by Noelle Hoffman)

6/19/2012 - U.S. Air Force Staff Sgt. Christopher La Boy, 9th Security Forces military working dog trainer, escorts a suspect as Frigo, a MWD, provides overwatch during a training scenario at Beale Air Force Base, Calif., June 12, 2012. Handlers often play the role of suspect during this type of training. (Courtesy photo by Noelle Hoffman)

6/19/2012 - U.S. Air Force Staff Sgt. Julie Gibbs, 9th Security Forces military working dog handler, prepares to release Kanto, during a training scenario at Beale Air Force Base Calif., June 14, 2012. MWDs use their keen sense of smell to search vehicles and buildings. (U.S. Air Force photo by Staff Sgt. Robert M. Trujillo/Released)

6/19/2012 - Kanto, a military working dog with the 9th Security Forces Squadron, reacts during a training scenario at Beale Air Force Base, Calif., June 12, 2012. MWDs are initially trained at Lackland Air Force Base, Texas, for approximately three months. (U.S. Air Force photo by Senior Airman Allen Pollard/Released)