Vincent Gray, D.C.’s mayor, switched track on Wednesday and endorsed the construction of a less expensive aboveground station at Washington Dulles International Airport in the interest of making sure rail to Dulles gets built at all. By changing his mind, Gray joined a formidable list of Northern Virginia and federal officials pressuring the Metropolitan Washington Airports Authority to bring down costs of the long-anticipated rail project to Dulles and into Loudoun County. He has urged the District’s three members of the authority’s board to switch their votes and back the aboveground station, as well.