The authority may: acquire, improve, develop, manage, market, lease as lessor or lessee, operate, and maintain a project; and acquire, either directly or by or through an agreement with the United States Department of Defense or a military service, by purchase or otherwise, any property, rights, rights-of-way, franchises, easements, and other interests in land, including land lying under water and riparian rights located in or outside the State as necessary or convenient to improve or operate a project on terms and at prices that the authority considers to be reasonable.