The Los Santos County Sheriff dept. performs a number duties in and around the greater Los Santos metropolitan area. Their main duties within city limits include court details, warrant arrests and prisoner transportation. However, they can occasionally be found assisting the LSPD with general patrol duties and traffic enforcement details (like DUI enforcement) in the outskirts of the city where LSPD forces are spread thin (I.E. Mirror Park). Seen here are two deputies patrolling a residential area in East Los Santos.
I absolutely love these skins by BradM, and I have a feeling they'll be a part of my 'GTAV Universe' for a while! I particularly like how they go with TWISTEDSCOPE's Riverside County CVPI. Both available in the downloads section. :)