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U.S. airports collectively received $14 billion annually (on average) for infrastructure projects between fiscal years 2013-2017.
Their three largest funding sources are:
Funding from federal Airport Improvement Program grants
Revenue from passenger fees
What GAO FoundGAO found that airport operators, government officials, real estate developers, and other regional stakeholders are taking actions consistent with five factors when pursuing airport-centric development (development on the airport property to enhance the airport's nonaeronautical revenue...
The aviation industry and business traveler groups have proposed the registered traveler concept as a way to reduce long waits in airport security lines caused by heightened security screening measures implemented after the September 11 terrorist attacks.
As the world's leading trading nation, the United States depends on a vast marine transportation system. Ninety-five percent of overseas trade tonnage moves by water, and the cargo moving through the U.S. marine transportation system contributes hundreds of billions of dollars to the U.S.