620 ILCS 50/22

To acquire land in fee simple, rights in and over land, and easements, upon, over or across land, and leasehold interests in land, and tangible and intangible personal property, used or useful for the location, establishment, maintenance, development, expansion, extension or improvement of any such airport or airports. Such acquisition may be by dedication, purchase, gift, agreement, lease, use or adverse possession or by condemnation.