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 Department of Homeland Security is constructing a new headquarters in Washington, D.C., at the site of St. Elizabeth's Hospital, a former psychiatric institution. Among Homeland Security's various "component" organizations are Customs and Border Protection, the Transportation Security Administration, Immigration and Customs Enforcement, the Coast Guard, and the Secret Service. (Photo: wageslaves, Creative Commons)