Washington Dulles International Airport

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Workman Rajinder Singh caulks concrete joints of the Wiehle Avenue Metrorail Station in Reston, which is the end of the line for Phase 1 construction of the Silver Line extension to Washington Dulles International Airport. (T.J. Kirkpatrick/The Washington Times)

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Metro General Manager Richard Sarles declined to say Thursday whether he prefers the design for an underground rail station at Washington Dulles International Airport or a cheaper above-ground alternative. (Barbara L. Salisbury/The Washington Times)

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** FILE ** The first Air France Airbus A380 flight prepares for landing at Washington Dulles International Airport in Virginia in this file photo from June 2011. The double-decker plane is 238 feet long, 79 feet tall and has a wing span of 261 feet. (Barbara L. Salisbury/The Washington Times)

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** FILE ** The first Airbus A380 arrives at Washington Dulles International Airport in Virginia in 2011. The fleet of jumbo jets replaced smaller aircraft that fly the route between Dulles and Charles de Gaulle Airport in Paris. (The Washington Times)

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A proposed below-ground Metrorail station at Washington Dulles International Airport would be located at the end of the corridor leading from daily parking garages 1 and 2. (Barbara L. Salisbury/The Washington Times)

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Rep. Frank R. Wolf, Virginia Republican, on Monday urges the Metropolitan Washington Airports Authority to reverse its decision to build a more costly underground Metrorail station at Washington Dulles International Airport. (Barbara L. Salisbury/The Washington Times)

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An above-ground Metrorail station at Washington Dulles International Airport would be located here, outside Daily Garage 1, at the airport in Chantilly, Va. (Barbara L. Salisbury/The Washington Times)