S.C. Code § 54-3-190
The board of the Authority may assign, transfer, lease, convey, grant or donate to the United States of America, or to the appropriate agency or department thereof, any or all of the property of the Authority for any use by such grantee for any purpose included within the general purposes of this chapter, as stated in Section 54-3-130, such assignment, transfer, lease, conveyance, grant or donation to be upon such terms as the board of the Authority may deem advisable. In the event the United States of America should decide to undertake the acquisition, construction, equipment, maintenance or operation of the airports, seaplane bases, naval bases, wharves, piers, ships, refrigerator storage plants, warehouses, elevators, compresses, docks, shipyards, shipping and transportation facilities before referred to, including terminal railroads, roads, highways, causeways or bridges, and should itself decide to acquire the lands and properties necessarily needed in connection therewith by condemnation or otherwise, the board of the Authority may transfer and pay over to the United States of America, or to the appropriate agency or department thereof, such of the moneys belonging to the Authority as may be found needed or reasonably required by the United States of America to meet and pay the amount of judgments or condemnation, including costs, if any be taxed thereon, as may from time to time be rendered against the United States of America, or its appropriate agency, or as may be reasonably necessary to permit and allow the United States of America, or its appropriate agency, to acquire and become possessed of such lands and properties as are reasonably required for the construction and use of the facilities before referred to.
S.C. Code § 54-3-190