(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:

(a) Notice in writing by the Administrator of Veterans Affairs or the Secretary of the United States Army shall be given to the Governor stating the intent to relinquish jurisdiction and stating specifically the extent of such relinquishment.

(b) The Governor may reject such relinquishment of jurisdiction by Executive Order filed with the Secretary of State prior to the effective date of such relinquishment. Upon request of any party or court, the Secretary of State shall certify by letter which shall be sufficient proof the existence or nonexistence of such executive order.

(c) Such relinquishment shall be effective as of 12 midnight of the last day of the month next succeeding the month in which such notice is received by the Governor.