170124-M-RP664-0033 IWAKUNI, Japan (Jan. 24, 2017) Lance Cpl. Kevin Kelly, a Provost Marshal's Office military working dog handler, watches as his K-9 searches for hidden explosives during training onboard Marine Corps Air Station Iwakuni, Japan. Handlers and their military working dogs train regularly in a variety of areas such as locating explosives and narcotics, conducting patrols, and human tracking in order to become a more effective team. (U.S. Marine Corps photo by Cpl. Aaron Henson/Released)