Domestic Nuclear Detection Office

The Domestic Nuclear Detection Office (DNDO) is a component of the Department of Homeland Security (DHS) in the United States. Established in 2005, the DNDO focuses on preventing and responding to nuclear and radiological threats within the U.S. Its primary mission is to detect and deter the illicit use of nuclear materials, such as those that could be used in a nuclear bomb, as well as to develop technologies and strategies to improve the country's nuclear detection capabilities.