S.C. Code Ann. § 55-5-80
The division shall assist in the development of aviation and aviation facilities within the State for the purpose of safeguarding the interest of those engaged in all phases of the industry and of the general public and of promoting aeronautics.
The division may cooperate with any county or municipality in the establishment, maintenance and operation of airports, landing fields or emergency landing strips and may do so in cooperation with other states or with any federal agency.