Neb. Rev. Stat. § 3-206

(1) The acquisition of any lands for the purpose of establishing airports or other air navigation facilities, (2) the acquisition of airport protection privileges, (3) the acquisition, establishment, construction, enlargement, improvement, maintenance, equipment, and operation of airports and other air navigation facilities, and (4) the exercise of any other powers herein granted to municipalities are hereby declared to be public, governmental, and municipal functions exercised for a public purpose and matters of public necessity. Such lands and other property, easements, and privileges acquired and used by such municipalities in the manner and for the purposes enumerated in the Revised Airports Act shall and are hereby declared to be public property.