The K9 Unit is a single Deputy unit with a highly trained canine. The K9 Unit is a specialized unit whose primary duty assignment is Patrol. However, the main function of the K9 is to perform drug interdiction. Drug Interdiction is a method of patrol with heavy emphasis on traffic enforcement/investigations which lead to drug arrests and seizures. A well-trained K9 drug dog can detect the scent of narcotics inside vehicles as well as inside buildings during search warrants.