Camp Pendleton Marines organize regional ATF K9 training - Cpl. John Lundberg, military police officer, Security and Emergency Services Battalion, and his canine, Iidol, navigates a practice National Odor Recognition Test at the Naval Weapons Station Fallbrook, Calif., May 23, 2018. The Bureau of Alcohol, Tobacco, Firearms and Explosives’ National K9 Division set out multiple cans with mixed ingredients to mimic homemade bombs, as well, as day to day smells in effort to imprint the odors into explosive detection dogs. (U.S. Marine Corps photo by Lance Cpl. Betzabeth Y. Galvan)