Sgt. Katie Edgar, Worcester County, Md., Sheriff’s Department K-9 Unit supervisor, along with her partner, “Brina,” a three-year-old German Shepherd narcotics detection dog, search for hidden narcotics Oct. 24, 2018, at Dover Air Force Base, Del. Tech. Sgt. Dominique Singleton, right, 436th Security Forces Squadron military working dog kennel master, set up two separate areas containing narcotics or explosives. (U.S. Air Force photo by Roland Balik)