SDCL § 50-6A-43: Joint exercise of powers by airport authority and public agency.

All powers, privileges, and authority granted by this chapter may be exercised and enjoyed by an authority jointly with any public agency of this state, and jointly with any public agency of any adjoining state or of the United States to the extent that the laws of such other state or of the United States permit such joint exercise or enjoyment. Any agency of the state government, when acting jointly with any authority, may exercise and enjoy all the powers, privileges, and authority conferred by this chapter upon an authority.