Ronald Reagan Washington National Airport is, along with Washington Dulles International Airport, part of a two-airport system that provides domestic and international air service for the Washington DC metropolitan and surrounding regions.  Both Airports have been managed by the Metropolitan Washington Airports Authority (MWAA) since 1987 when they were transferred by Congress to the Authority under a long-term lease authorized by the Metropolitan Washington Airports Act of 1986, Title VI of Public Law 99-50.