Question about Lee County Sheriffs Talkgroups SOS, HAIL, etc.

[tdyzfr6]

So I was listening to Lee County Sheriff's Talkgroups and as I heard "SOS" #46384, "Law Enforcement HAIL" #2064, and "CIVIL WARRANTS" #46000 come up a few different times. Im assuming SOS is Sheriff's Office...?? And Civil Warrants they use to communicate when they are serving civil warrants?? I don't know. More curiousity than anything. I appreciate any input anyone has. Thanks