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• PhilipJohnston.com :: Links :: Intelligence
• A guide to the UK, US and international intelligence machinery and architecture
• Organization - Naval Security Group Command - NAVSECGRU
• All NAVSECGRU Commands Have Now Been Renamed Navy Information Operations Commands (NIOCs) under control of CNO.
• Eyeballing the Naval Security Group Activity Skaggs Island
• In 1941, the United States Navy purchased 3,310 acres of the island for military use, and developed 60 acres on the north end of the island as a cryptologic communications installation known as the Skaggs Island Naval Security Group Activity.....
• Frode Weierud's CryptoCellar
• Cryptology and Its History - One could easily spend days just following and reading the links on this site...
• The UnMuseum - Cryptology
• The science of secret codes and ciphers.....
• Enigma Cipher Machine
• here is no such thing as the Enigma. In fact, Enigma is the brand name of a series of cipher machines, developed before and during WWII, some of which are compatible with each othe....
• Dirk's Weblog: The National Cryptologic School - On Watch
• Interesting blog from, I believe, this Belgium
• Tselina electronic intelligence spacecraft
• Tselina electronic intelligence satellites by Anatoly Zak
• Radio Direction Finding Military
• Fascinating Shortwaves A bit of history of radio direction finding.
• NSA Leter To FAS Regarding RFP - PDF
• This provides the final response to your Freedom of Information Act
  (FOIA) request of 31 January 2001 for "a copy of all NSA Declassification Guidance memoranda and comparable documents concerning NSA declassification actions that have been issued by the Office of Policy from December 1999 up to present"

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