1.    For the purposes of this section, unless otherwise qualified, the term “public agency” includes municipality and authority, any agency of the state government and of the United States, and any municipality, political subdivision, and agency of an adjoining state; and the term “governing body” includes commissioners of an authority, the governing body of a municipality, and the head of an agency of a state or the United States if the public agency is not an authority or municipality. All powers, privileges, and authority granted by this chapter may be exercised 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 the other state or the United States permit such joint exercise. Any agency of the state government, when acting jointly with any authority, may exercise all the powers, privileges, and authority conferred by this chapter upon an authority.

2.    Any two or more public agencies may enter agreements with each other for joint action under this section. Each agreement must specify its duration, the proportionate interest that each public agency must have in the property, facilities, and privileges involved in the joint undertaking, the proportion of costs to be borne by each public agency, and other terms as necessary or required by law. The agreement may provide for amendments and termination; disposal of the property, facilities, and privileges jointly owned, before, or at such times as the property, facilities, and privileges cease to be used for the purposes provided in this chapter, or upon termination of the agreement; the distribution of the proceeds received upon any disposal, and of any funds or other property jointly owned; the assumption of payment of any indebtedness    arising from the joint undertaking which remains unpaid upon the disposal of all assets or upon a termination of the agreement; and other provisions as necessary or convenient.

3.    Public agencies acting jointly under this section shall create a joint board consisting of members appointed by the governing body of each participating public agency. The number to be appointed and the term and compensation of the members must be provided for in the joint agreement. Each joint board shall organize, select officers for terms that are fixed by the agreement, and adopt and amend rules for its own procedure. The joint board, as agent of the participating public agencies, may plan, acquire, establish, develop, construct, enlarge, improve, maintain, equip, operate, regulate, protect, and police any airport or airport hazard to be jointly acquired, controlled, and operated, and the participating public agencies may authorize the joint board to exercise all the powers of the constituent public agencies with respect to the airport or airport hazard, subject to the limitations of subsection 4.

4.     a.    The total expenditures to be made by the joint board for any purpose in any calendar year must be as determined by a budget approved by the constituent public agencies on or before the preceding December first, or as otherwise specifically authorized by the constituent public agencies.

b.    No airport or airport hazard, or real or personal property, the cost of which is in excess of sums fixed by the joint agreement or allotted in the annual budget, may be acquired, established, or developed by the joint board without the approval of the governing bodies of its constituent public agencies.

c.    Subject to chapter 32-15, the joint board may institute eminent domain proceedings under this section only if the governing bodies of the constituent public agencies of the joint board authorize the board to do so. If authorized, the proceedings must be instituted in the names of the constituent public agencies jointly, and the property acquired must be held by the public agencies as tenants in common.

d.    The joint board may not dispose of any airport or real property under its jurisdiction except with the consent of the governing bodies of its constituent public agencies, except the joint board may, without that consent, enter contracts, leases, or other arrangements contemplated by section 2-06-11.

e.    Any resolutions, rules, or orders of the joint board dealing with subjects authorized by section 2-06-11 become effective only upon approval of the governing bodies of the constituent public agencies. Upon the approval, the resolutions, rules, or orders of the joint board have the same effect in the territories or jurisdictions involved as the ordinances, resolutions, rules, or orders of each public agency would have in its territory or jurisdiction.

5.    The joint board shall create a joint fund for the purpose of providing the joint board with moneys for necessary expenditures to carry out this section, and into which must be deposited the share of each of the constituent public agencies as provided by the joint agreement. Any federal, state, or other grants, contributions, or loans, and the revenues obtained from the joint ownership, control, and operation of any airport under the jurisdiction of the joint board must be paid into the joint fund. Disbursements from the fund must be made by order of the board, subject to the limitations prescribed in subsection 4.