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Homeland Security

Operations Support Directorate


The Operations Support Directorate (OSD) of the Domestic Nuclear Detection Office (DNDO) focuses on leading the implementation and sustainment of capabilities that prevent and reduce the risk of radiological and nuclear terrorism within the United States. 


  • Provide situational awareness of the nuclear threat through the sharing of information and databases with the intelligence community, counterterrorism resources, Fusion Centers, Federal Bureau of Investigation (FBI) Joint Terrorism Task Forces (JTTFs), the Department of Energy (DOE), Customs and Border Protection (CBP), the Department of State (DOS) and other U.S. government agencies, as well as state, county and municipal law enforcement communities.
  • Provide and coordinate technical support to federal, state and local authorities to assist in the adjudication of nuclear detection alarms/alerts with a 24/7 operational support capability.
  • Develop standard Preventive Radiological Nuclear Detection (PRND) training course curriculum, provide prioritized delivery assurance for on-demand training and integrate into law enforcement/emergency responder academy training programs for systemic growth.
  • Support national, state and regional exercise coordination using the Homeland Security Exercise Evaluation Program (HSEEP) as the planning tool.
  • Develop regional PRND capabilities either through the Securing the Cities (STC) Initiative for Department of Homeland Security (DHS) Urban Area Security Initiative (UASI) Tier I regions or capabilities development programs for DHS UASI Tier II areas and assist the state and local stakeholders to gain the ability to sustain operational capability.


OSD consists of technical and expert staff organized into three divisions:

Capabilities Development Division

Central to the success of an integrated effort to defend our nation from the radiological and nuclear threat is a strong partnership with state and local entities responsible for the preventive radiological/nuclear detection mission within their own communities. To facilitate this partnership, the Capabilities Development Division:

  • Provides program management of Securing the Cities (STC) and other capabilities development activities in high risk urban areas
  • Conducts situational awareness outreach with UASI cities and areas; law enforcement working groups and associations
  • Develops operational support products including concept of operations (CONOPs) template, brochures and handbooks
  • Assists in Standard Operating Procedure development, and identification of training and exercise requirements that promotes a “systems” view of all operational support activities and PRND capabilities development

Joint Analysis Center (JAC) Division

The JAC provides 24/7 capabilities to maintain situational awareness of the Global Nuclear Detection Architecture (GNDA), analyze information from the GNDA, law enforcement and intelligence communities. The JAC then shares the collected data and information with the Communities of Interest (COI) to enable the GNDA to become more effective, and ensure that detection leads to an appropriate response through the development of appropriate alarm adjudication protocols and facilitating the execution of those protocols. The JAC:

  • Provides technical reachback and alarm adjudication at the national level
  • Develops radiological/nuclear awareness products: State Books, Cargo Reports
  • Provides continuous sharing of information and databases with the Intelligence Community, counterterrorism resources, Fusion Centers, FBI, JTTF, DOE, CBP, DOS, and other U.S. government agencies as well as state, county and municipal law enforcement communities

Training and Exercises Division

In order to implement, sustain and grow PRND capabilities at the state and local level, the Training and Exercises Division:

  • Provides standardized operational training on PRND equipment to promote and sustain a high level of proficiency
  • Facilitates the design, development, and execution of HSEEP compliant PRND seminars, workshops, table tops, drills, functional and full-scale exercises

Department of Homeland Security
Washington, DC 20528
Attn: DNDO

Last Published Date: August 22, 2012
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