. "2014" . . . . "Metro Silver Line" . "second phase" . . . . "Metrorail to Dulles Airport" . "Undergoing testing (phase 2)" . "Silver Line metro" . . "planned expansion project" . "currently being expanded" . . "Operating (phase 1)" . "Silver Line (Washington Metro)" . "47636.5824" . "Washington Metro's Silver Line" . . "Silver Line" . "controversy" . "2014-07-26" . . . "28" . "extension of Metrorail to Dulles Airport" . . . "controversy ensued" . "Washington Metro Silver Line" . "an extension of the Washington Metro's Silver Line" . "2022" . "Silver" . "Silver lines" . "Metro line" . "Silver Lines" . "six-station extension" . . . . . . "Silver Line (Washington Metro)" . "Dulles Corridor" . . "Dulles Corridor Metrorail" . . .