S.C. Code Ann. § 25-9-510

The purpose of this article is to provide procedures for the use of out-of-state officers who are deployed to the State of South Carolina in accordance with the provisions of the Emergency Management Assistance Compact, which is codified in Section 25-9-420. The use of out-of-state law enforcement personnel pursuant to the Emergency Management Assistance Compact is designed solely for situations when South Carolina's law enforcement resources have been exhausted or will be exhausted subsequent to a declaration of a state of emergency or disaster by the Governor of the State of South Carolina.