The National Technical Information Service (NTIS) is the nation's largest and most comprehensive source of government-funded scientific, technical, engineering, and business information produced or sponsored by U.S. and international government sources. NTIS is a federal agency within the U.S. Department of Commerce. Since 1945 the NTIS mission has been to operate a central U.S. government access point for scientific and technical information useful to American industry and government. NTIS maintains a permanent archive of this declassified information for researchers, businesses, and the public to access quickly and easily. Release of the information is intended to promote U.S. economic growth and development and to increase U.S. competitiveness in the world market. The NTIS collection of more than 2 million titles contains products available in various formats. Such information includes reports describing research conducted or sponsored by federal agencies and their contractors; statistical and business information; U.S. military publications; multimedia training programs; databases developed by federal agencies; and technical reports prepared by research organizations worldwide. NTIS maintains a permanent repository of its information products. More than 200 U.S. government agencies contribute to the NTIS collection, including the National Aeronautics and Space Administration; Environmental Protection Agency; the departments of Agriculture, Commerce, Defense, Energy, Health and Human Services, Homeland Security, Interior, Labor, Treasury, Veterans Affairs, Housing and Urban Development, Education, and Transportation; and numerous other agencies. International contributors include Canada, Japan, Britain, and several European countries. NTIS offers Web-based access to the latest government scientific and technical research information products. Visitors to http://www.ntis.gov can search the entire collection dating back to 1964 free of charge. NTIS also provides downloading capability for many technical reports, and purchase of the publications on CD as well as paper copies. National Technical Reports Library:  New at NTIS, the National Technical Reports Library (NTRL) provides a more comprehensive offering that delivers high-quality government technical content in all subject areas directly and seamlessly to the user’s desktop. The NTRL service gives access to more than 2 million NTIS bibliographic records and more than 500,000 full-text documents in PDF format. For more information, seehttp://www.ntis.gov/products/ntrl.aspx.