Northern Virginia from the older National Airport (a focus city for American Airlines) are restricted for distance, frequency, and flight paths due to the proximity to federal facilities, Dulles is the region's second busiest airport in both passenger loadings and aircraft movements, and the sixteenth-busiest airport in the United States by takeoffs and landings in 2007. Dulles is the region's primary international gateway, serves as a hub for United Airlines, and has recently improved its low-cost carrier offerings with the addition of multiple flights by Southwest and JetBlue. Commuters are served by the Washington Metro subway and the Virginia Railway Express, a
Avery Dulles the United States. Dulles prepared his written remarks to the pope prior to the visit. Dulles died on December 12, 2008 at Fordham University in the Bronx, where he had lived for many years. His remains were buried in the Jesuit cemetery in Auriesville, New York. Cardinal Dulles wrote 25 books and hundreds of articles and essays. A "catalogue raisonné" including his many translations, forewords, introductions, reviews and letters to the editor, was published by Fordham University Press in 2012 under the title "The Legacy of Avery Cardinal Dulles, S.J.: His Words and His Witness". Avery Dulles Avery Robert Dulles,