Processes and decisions involved in the withdrawal of some government information from public release are discussed. The Defense Technical Information Center (DTIC), which has been in existence since 1945, is a repository of gray literature, with most documents not available through any commercial publishing or distribution channels. The technical reports are produced in small numbers, mostly for distribution to those who have been specified by the Department of Defense organization that sponsored, supported, or received the work on behalf of the DOD. Topics covered include categories of information (classified, limited distribution, and unclassified, limited distribution, and unclassified, unlimited distribution). A registration process controls access, and most customers are those with a legitimate business relationship with DOD. Among those who can register are qualified and authorized DOD employees, employees of another U.S. federal government agency or U.S. federal government contractor, researchers at universities or colleges funded by DOD or a U.S. federal government agency (for conducting research throughout the U.S. DTIC used the Internet early to disseminate information and hosts over 100 Web sites. An April 2002 Congressional Research Service (CRS) provides background information on Possible Impacts of Major Counter Terrorism Security Actions on Research, Development, and Higher Education. DTIC has developed multiple search strategies for identifying CBRN documents and discussed document withdrawal issues with those drafting a White House Directive called the Card Memo. The memo directs all executive departments and agencies to use their current policies and procedures for identifying and protecting all information pertaining to development or use of CBRN that could be misused to damage the U.S.'s security. Te memo did not set new policy, but was a reminder of processes already existing.