About Us

DTRA is the U.S. Department of Defense’s official Combat Support Agency for countering Weapons of Mass Destruction (WMD). Our people are Subject Matter Experts on WMD, and we address the entire spectrum of chemical, biological, radiological, nuclear and high yield explosive threats. DTRA’s programs include basic science research and development, operational support to U.S. warfighters on the front line, and an in-house WMD think tank that aims to anticipate and mitigate future threats long before they have a chance to harm the United States and our allies.



The VIRTUS project is managed by the Research and Development (R&D) Information Science and Applications Department (J9IS), located at Fort Belvoir, Virginia. J9IS is responsible for the integration and systems engineering of efforts across the R&D directorate. DTRA J9IS manages Technical Reachback a WMD analysis cell that provides 24/7 support to the Department of Defense and the US Government. J9IS is also the technical hub for the Interagency Modeling and Atmospheric Assessment Center (IMAAC), which coordinates and disseminates Federal atmospheric dispersion modeling and hazard prediction products.



CTOS develops and delivers training for state and local first responders to prevent or respond to the terrorist use of radiological or nuclear WMDs, such as Improvised Nuclear Devices (INDs), Radiological Dispersal Devices (RDDs or “dirty bombs”), and Radiation Exposure Devices (REDs). CTOS (or the Counter Terrorism Operations Support – Center for Radiological/Nuclear Training at the Nevada National Security Site) is a charter member of the National Domestic Preparedness Consortium (NDPC), and has trained over 160,000 first responders since 1998. National Security Technologies, LLC (NSTec) is a Management and Operations contractor to the U.S. Department of Energy (DOE), National Nuclear Security Administration (NNSA). The CTOS mission is to develop and conduct training courses for the U.S. Department of Homeland Security (DHS), Federal Emergency Management Agency (FEMA), National Preparedness Directorate (NPD). With FEMA/NPD concurrence, CTOS also coordinates the development and delivery of preventive radiological/nuclear detection and interdiction training with the DHS Domestic Nuclear Detection Office (DNDO). 

 Distribution is authorized to US military personnel; federal, state, and local first-responders; and selected others. The Defense Threat Reduction Agency maintains the trunk, but the source code is available to government program managers who are free to create a branch.

To download VIRTUS, click on the link above. On the Ops Portal site, Click "New Account Request" under "DTRA CBRNE Decision Support Site" to request an account.

VIRTUS 1.1 will be released by September 2016.


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