Defense Threat Reduction Agency   About DTRA Advanced Systems and Concepts Office Business Opportunities Contact Us Defense Threat Reduction Information Analysis Center Employee Resources Employment Opportunities Feedback Freedom of Information Act Frequently Asked Questions Joint Reserve Forces Opportunities News Media Resources Security and Counterintelligence Staff Offices This is a government system  Welcome to DTRALink. This is  the official web site of the  Defense Threat Reduction  Agency. Our mission is to  safeguard America and its allies  from Weapons of Mass  Destruction (chemical, biological,  radiological, nuclear, and high  yield explosives) by providing  capabilities to reduce, eliminate,  and counter the threat, and  mitigate its effects. (Learn more) January 3, 2006 View the Tentative FY06 SBIR (Small B