Miss. Code § 41-55-1
The board of supervisors of any county and the governing authorities of any city, town, or any political subdivision thereof, either separately or acting in conjunction, in their discretion and upon finding that adequate public ambulance service would not otherwise be available, may own, maintain, and operate a public ambulance service as a governmental function, fix and collect charges therefor, and adopt, promulgate and enforce reasonable rules and regulations for the operation of said service. Any political subdivision, or parts thereof, acting hereunder may contract and otherwise cooperate with any department or agency of the United States Government or the State of Mississippi, or any county, city, town, or supervisors district of the same, or other counties of the State of Mississippi in carrying out any of the powers herein conferred or otherwise effectuating the purposes of Sections 41-55-1 through 41-55-11 and in so doing accept gifts, money, and other property of whatever kind.
Miss. Code § 41-55-1