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Annex X
The Interaction Between OSI and the National Security Agency
The [redacted] in the production of scientific intelligence predates both the CIA Office of Scientific Intelligence and the present National Security Agency. OSI, and the Scientific Branch/ORE before it, worked with NSA and its predecessors on a wide spectrum of problems.
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OSI has had personnel actually working in NSA spaces [redacted] and senior CIA personnel have been assigned to responsible jobs in the NSA organization. All of this is woven in the fabric of OSI relations with NSA.
A brief history of NSA will be useful in understanding the relations of OSI with NSA and its predecessors. In 1947, when the Central Intelligence Agency was created, COMINT was the responsibility of the Army Security Agency, and the Naval Security Group. The merger of these two organizations, ordered by the Secretary of Defense in 1949, became effective in 1950
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