Directorate of Operations (CIA)

The Directorate of Operations (DO), less formally called the Clandestine Service, is a component of the US Central Intelligence Agency. It was known as the Directorate of Plans from 1951 to 1973; as the Directorate of Operations from 1973 to 2004; and as the National Clandestine Service (NCS) from 2004 to 2015.

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