The U.S. Intelligence Community comprises 17 federal agencies and departments that gather, analyze, and share information for national security and defense, foreign relations, law enforcement, and other purposes.
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The Central Intelligence Agency provides national security intelligence to top U.S. government officials and other policy makers. The CIA is organized into four major divisions, once of which conducts clandestine operations and another, the Directorate of Science and Technology, that develops and operates intelligence collection and advanced analysis systems. The CIA's headquarters, pictured here, is in Langley, Va. (Photo: CIA)