N.J. Stat. § 40:8-1
The governing body of any county and the governing body of any municipality, or either of them, may acquire by gift, grant, purchase, condemnation or in any other lawful manner real estate or any right or interest therein for airport purposes and so use lands theretofore acquired for other public purposes and being used for airport purposes and erect thereon and maintain buildings for the airport purposes.
Upon such acquisition or use, the governing body of any county and the governing body of any municipality, or either of them, may lease the real estate, so acquired, with or without consideration to the state of New Jersey, or any agency thereof, or may lease it to any person for such consideration and for such term of years as may be agreed upon.
N.J.S. § 40:8-1