Staff Sgt. Seth Shannon, 374th Security Forces Squadron military working dog handler, and his dog, Riko, search the room for controlled substance during a demonstration at the Tokyo Customs Canine Training Center at Narita, Japan, Dec. 19, 2019. Shannon and Riko have been working as a team for seven months, utilizing their patrol and detection skillsets to defend the installation. (U.S. Air Force photo by Airman 1st Class Brieana E. Bolfing)