There's a pretty good recent overview of NSA -- history, organization, operations and, best, facilities -- at: URL: http://www.fas.org/pub/gen/fas/irp/nsa/ This is part of the Federation of American Scientists (FAS) web site, cited here by Jim Gillogly in connection with the VENONA papers. There are links to a bounty of other information on national security and governmental secrecy. Among many sweetmeats, the homepage on "Cyberstrategy" may be of interest (John Pike's project): URL: http://www.fas.org/pub/gen/iswg/cyberstr.html