Homeland Security Digital Library
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"Originally designed to be a repository and research tool for the US Department of Homeland Security, it is now available as a partially open access database for those researchers interested in topics related to homeland security, a wide variety of disciplines including first responder, emergency management, infrastructure protection, intelligence, law enforcement, economics, management, military, politics and government, public health, technology, terrorism, transportation and weaponry. HSDL includes two search engines, one open access and one available by registration to government personnel, researchers and academics. To obtain full research status you must submit your name, institution, position and professional or research interest in the website."