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Cheyenne Jackson Cheyenne Mountain Complex Cheyenne, Wyoming Cheyenne, Quận Lane, Kansas Cheyenne, Quận Barton, Kansas ChevennesTài liệu tham khảo
WikiPedia: Cheyenne Mountain Complex http://www.gazette.com/articles/mountain-10067-che... http://www.gwu.edu/~nsarchiv/nukevault/ebb371/ http://www.dtic.mil/dtic/tr/fulltext/u2/a201708.pd... http://www.norad.mil/Newsroom/FactSheets/ArticleVi... http://ed-thelen.org/72digest_f015-16.gif http://more.ppld.org:8080/SpecialCollections/proje... http://srmsc.org/pdf/004434p0.pdf //tools.wmflabs.org/geohack/geohack.php?language=v... https://books.google.com/books?id=wSzfAQAAQBAJ&pg=... https://www.youtube.com/watch?v=l59SEjAMAiA