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Documents in the NTIS Technical Reports collection are the results of federally funded research. They are directly submitted to or collected by NTIS from Federal agencies for permanent accessibility to industry, academia and the public.  Before purchasing from NTIS, you may want to check for free access from (1) the issuing organization's website; (2) the U.S. Government Printing Office's Federal Digital System website; (3) the federal government Internet portal; or (4) a web search conducted using a commercial search engine such as

About the Homeland Security Information Center

The Homeland Security Information Center at NTIS is an invaluable resource for scientific and technical information from the U.S. Government, its contractors, and complementary material from international sources. The HSIC is categorized into these major security concerns: health & medicine, food & agriculture, bio and chemical warfare, preparedness and response, and safety training. Products are available in a variety of formats: electronic download, online access, computer products, multimedia and paper.