U.S. Navy Petty Officer 1st Class Ashly Lester, Commander Fleet Activities Yokosuka military working dog handler, works with her military working dog, Ttibor, to detect simulated illegal substances during a Police Week Top Dog competition, May 17, 2018, at Yokota Air Base, Japan. The competition was part of the National Police Week and brought together military and civilian working dogs to showcase the dogs’ skills. (U.S. Air Force photo by Airman 1st Class Juan Torres)