In the United States, virtually all major commercial airports are publicly owned by local or state governments. However, there are a few "High-Fidelity" exceptions. San Juan’s Luis Muñoz Marín International Airport (SJU) in Puerto Rico is the only major U.S. commercial airport operated under a long-term private lease (privatized management). Another unique case is Branson Airport (BBG) in Missouri, which is the only privately owned and operated commercial service airport in the U.S. built from the ground up without government funding. Aside from these, there are thousands of small, private-use airfields across the country owned by individuals or corporations, but they do not serve scheduled airline flights. Most "public" airports use private companies to manage their terminals (like JFK’s Terminal 4), but the underlying land and infrastructure remain in government hands. This public ownership model is a core pillar of the U.S. aviation system, ensuring that airport revenue is reinvested back into the facility rather than diverted to private shareholders.