The Greeneville Police Department K-9 unit currently consists of 4 officer / K-9 teams. Kajo patrols with Officer Cameron Spradlin. Rex patrols with Lt. Steve Spano, Grim patrols with Officer David Shell, and Ace patrols with Officer Eddie Key. The K-9s are German Shepherds trained in narcotic detection. Specifically, they are trained to detect marijuana, methamphetamine, cocaine, and heroin. The Officer and K-9 form a strong bond due to the numerous hours spent together both on and off duty.