Airports are of significant economic importance to regional businesses and to the quality of life of residents by providing access to safe, secure, rapid, affordable air transportation services. At the major U.S. airports, regional airport authorities operate the airports as public utilities providing infrastructure to service providers and their supply chain under "revenue neutral" financial regulations. As public entities with no stockholder profit motives, the airport authorities are obliged to work to balance the interests of all of their stakeholders to build the airport infrastructure, lease space to service providers, and ensure that the service providers collaborate to provide seamless, safe, secure service to the consumers of air travel services. A review of published airport benchmarks revealed that they are largely ambiguous on stakeholders and stakeholder boundaries.