Miss. Code § 41-55-37
When the Governor shall have received at least two (2) such resolutions from any one (1) air ambulance service district, he shall within five (5) days appoint from the district-at-large his one (1) member of the board of directors of the district. Thereafter the board of supervisors of each county in the district which has certified to its joinder in the district shall appoint one resident of its county as its member of the board of directors of the district. The appointee may by vocation be related to the hospital or medical fields or engaged in an ambulance service but all appointments shall not be limited to persons with such backgrounds. The term of each member shall coincide with that of the appointing official, so that after the initial appointment the terms shall be for a period of four (4) years.
Miss. Code § 41-55-37