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 National Security Agency's headquarters is located in Fort Meade, Maryland. NSA and the related Central Security Service use cryptology to produce foreign signals intelligence for use by the U.S. military, federal agencies, and some foreign allies. NSA describes itself as home to America's "code makers and code breakers."