C.R.S. § 41-4-101: Operation a governmental function.

The acquisition of any lands for the purpose of establishing airports or other air navigation facilities; the acquisition of airport protection privileges; the acquisition, establishment, construction, enlargement, improvement, maintenance, equipment, and operation of airports and other air navigation facilities; and the exercise of any other powers granted in this part 1 to any county, city and county, city, or town are hereby declared to be public governmental functions, exercised for a public purpose, and matters of public necessity; and such lands and other property, easements, and privileges acquired and used in the manner and for the purposes enumerated in this part 1 are hereby declared to be acquired and used for public purposes and as a matter of public necessity.