S.C. Code Ann. § 58-13-920: Term and powers, duties and responsibilities of special officers or constables.

Such special officers or constables shall have all the powers, duties and responsibilities of deputy sheriffs and other police officers, and their commissions shall continue so long as they are employed in such capacity by the railway or other common carrier. But the Governor shall revoke their commissions upon request of the superintendent or manager of the railway or other common carrier upon whose application they were appointed and the Governor may also at any time revoke such commissions for cause.