One of the oldest auxiliary units of the San Luis Obispo County Sheriff's Office is the Sheriff's Posse. Dating back to the 1940's, this unit is made up of volunteers on horseback. The Sheriff's Posse represents the Sheriff's Office in parades and search and rescue operations. Each member is required to provide and maintain their own horse, equipment and uniform. The Sheriff's Posse is divided into two teams. The teams consist of a Search and Rescue Team and a Ceremonial Team.