Mississippi Code Title 3. State Sovereignty, Jurisdiction and Holidays § 3-5-5

(1) The exclusive jurisdiction in and over any land which has heretofore been, or may hereafter be, so acquired by the United States is hereby ceded to the United States for all purposes, except that the state retains the right to serve thereon all civil and criminal processes as provided in Section 3-5-9. The jurisdiction ceded hereby shall not vest until the United States shall have acquired title to the lands by purchase, condemnation, or otherwise, and shall continue no longer than the United States shall own such lands for the purposes for which acquired.

(2) Full or partial jurisdiction may be relinquished to the state as to land or interests therein under the supervision and control of the Administrator of Veterans Affairs of the United States or the Secretary of the United States Army as follows: