NBCNews.comSheriff's van swept away in Florence flooding, killing 2 mental health patientsNBCNews.comA sheriff's office van carrying two mental health patients in Horry County, South Carolina, was headed for a mental health center on Tuesday night when the vehicle came about a half-mile from the Little Pee Dee River. Parts of the river had risen to ...2 detainees drown in sheriff's van amid flooding, brings Florence death toll to 37USA TODAYThe Latest: 2 Women Who Died in Transport Van IdentifiedU.S.