Chief Mayes is a 30-year law enforcement veteran with the Shelby County Sheriff’s Office and Gallaway, Tennessee Police Department. During these years, he worked in Homicide, Metro Narcotics, Burglary, Robbery, Auto Theft (BRAT), West Tennessee Drug Task Force, Fugitive, Civil Levy, Courts, and Patrol. Prior to being appointed chief in December of 2016, Chief Mayes came to the GPD in 2017 and shortly after was named captain. Chief Mayes is also a graduate of the FBI National Academy in Quantico, Virginia and a National Fire Academy in Emmitsburg, Maryland.