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The military services formed a "Joint Operating Plan" to cover 1946-1949, but this had its disadvantages. The situation became a good deal more complex with the passage of the National Security Act of 1947, which created a separate Air Force and Central Intelligence Agency, as well as unifying the military services under a Secretary of Defense.
The United States Army Security Agency (ASA) was the United States Army's signals intelligence branch from 1945 to 1977. [1] The Latin motto of the Army Security Agency was Semper Vigilis (Vigilant Always), which echoes the declaration, often mistakenly attributed to Thomas Jefferson, that "The price of liberty is eternal vigilance." [2] [3]
Units also provided hardcopy summary reports to their tasking authorities. Many USAFSS personnel were dedicated to this mission throughout their Air Force careers, while others moved between TRANSEC/COMSEC and the more traditional SIGINT operations. The TRANSEC/COMSEC mission was occasionally used as a cover story for SIGINT operations.
A United States Air Force Boeing RC-135 aircraft in flight Royal Air Force Hawker Siddeley Nimrod A52 Oste, an Oste class ELINT and reconnaissance ship, of the German Navy. Signals intelligence operational platforms are employed by nations to collect signals intelligence, which is intelligence-gathering by interception of signals, whether between people (i.e., COMINT or communications ...
ECHELON, originally a secret government code name, is a surveillance program (signals intelligence/SIGINT collection and analysis network) operated by the five signatory states to the UKUSA Security Agreement: [1] Australia, Canada, New Zealand, the United Kingdom and the United States, also known as the Five Eyes.
Signals intelligence facility. Alexandria and Marsa Matruh Egypt: 1967–1972 Latakia and Tartus Syria: 1971–present Nokra, Dahlak Archipelago Ethiopia: 1977–1991 Socotra and Aden South Yemen: 1971–late 1980s [2] [3] [4] Tripoli and Tobruk Libya: 1977–2011 Port Arthur, Bohai Bay China: 1945–1956
The birth of signals intelligence in a modern sense dates from the Russo-Japanese War of 1904–1905. As the Russian fleet prepared for conflict with Japan in 1904, the British ship HMS Diana stationed in the Suez Canal intercepted Russian naval wireless signals being sent out for the mobilization of the fleet, for the first time in history.
Vint Hill Farms Station was established during World War II in 1942 by the Army's Signal Intelligence Service (SIS). The 701-acre (284 ha) facility was built because the Army needed a secure location near SIS headquarters in Arlington Hall to serve as a cryptography school and as a refitting station for signal units returning from combat prior to redeployment overseas.