(1) When it is deemed desirable to acquire additional real property or any interest therein for the activities of the military department and such property shall be acquired by the adjutant general when so authorized by the general law for other state departments and agencies;

(2) When it is deemed desirable to dispose of any real property or any interest therein under the jurisdiction of the military department, the adjutant general shall execute the conveyance on behalf of the state, but the conveyance shall be approved by such other officials as may be required by law to approve conveyances of the state's real property; provided, that in no event shall real property under the jurisdiction of the military department be disposed of without the approval of the governor, and such real property shall be disposed of in the way and manner and in accordance with such procedures as provided by the general law as to the disposition of other real property belonging to the state;

(3) The adjutant general, with the approval of the governor, may enter into cooperative agreements with the federal government and its local governmental subdivisions or agencies in connection with all phases of the activities of the military department including the joint use and occupancy of buildings and grounds including, but not limited to, aviation or airport facilities. Such agreements and contracts including, but not limited to, licenses and leases which have heretofore been entered into by the adjutant general and/or the governor are hereby authorized and validated.