The Department of Homeland Security was established in 2002, combining 22 different federal departments and agencies into a unified, integrated Cabinet agency.
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Creation of the Department of Homeland Security
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A summary of historical laws and regulations constructing and modifying the existing Department of Homeland Security.
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Department of Homeland Security Seal
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DHS seal was created in 2003 to symbolize the Department's mission of preventing attacks and protecting Americans on land, sea and air.
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Homeland Security Advisory System
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Chronology of Homeland Security Advisory System from implementation until replaced by National Terrorism Advisory System.
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Secretaries of Homeland Security
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The former Secretaries of the Department of Homeland Security.
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Who Joined DHS
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DHS was created through the integration of all or part of 22 different federal departments and agencies into a unified Department.
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History of the NAC
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Learn the history of the Nebraska Avenue Complex (NAC) through its origins as a girls seminary to a code breaking facility during World War II and its current incarnation as the home of the headquarters of the U.S. Department of Homeland Security.