California Code, Public Utilities Code - PUC § 40182

The district may acquire, construct, own, or operate air terminal facilities within the district and, with the consent of the county in which such facilities are located, outside of the district, and may accept contributions of money, labor, materials, and any other property from, and enter into any contract and cooperation with, the federal government or the state, or any department, instrumentality, or agency thereof, or any public agency for such purposes.