Central Intelligence Agency (CIA)
Official site provides news and information, publications, offices of the CIA, and careers. Includes links to their World Factbook, chiefs of state, and studies in Government Law Enforcement and Intelligence.
Department of Defense
Designed to support the overall mission of the Department of Defense, which is to provide the military forces needed to deter war and to protect the security of our country. Defense.gov provides official, timely, and accurate information about defense policies, organizations, functions and operations. Defense.gov is the single, unified starting point for finding military information online.
Department of Homeland Security
FBI - Federal Bereau of Investigation
Homeland Security Digital Library
Open access to over 45,400 Federal Documents and Academic Thesis. Register with the site to gain access to over 82,800 Federal Documents.