S.C. Code § 6-11-1420
Notwithstanding any other provisions of law, authorized representatives of the Fire Authority having jurisdiction, as may be in charge at the scene of a fire or other emergency involving the protection of life or property or any part thereof, have the power and authority to direct such operation as may be necessary to extinguish or control the fire, perform any rescue operation, evacuate hazardous areas, investigate the existence of suspected or reported fires, gas leaks, or other hazardous conditions or situations, and of taking any other action necessary in the reasonable performance of their duty. In the exercise of such power, the Fire Authority having jurisdiction may prohibit any person, vehicle, vessel, or object from approaching the scene and may remove or cause to be removed or kept away from the scene any person, vehicle, vessel, or object which may impede or interfere with the operations of the Fire Authority having jurisdiction.
S.C. Code § 6-11-1420