The transit and border layer (Trans-Border) is composed of transit to the U.S. from a foreign port of departure or non-port of departure, as well as passing through the U.S. border prior to entering the U.S. interior. This represents the last opportunity to detect radiological or nuclear materials prior to their arrival onto U.S. territory, and initiatives in this layer emphasize maritime domain awareness related to preventive radiological/nuclear detection.
The nation’s success in preventing nuclear terrorism is a result of the close collaboration between the Department and its international, federal, state, local, tribal, and territorial partners.
The National Strategy for Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Standards lays out the federal vision and goals to achieve a comprehensive structure for coordination, establishment, and implementation of CBRNE equipment standards by 2020.
The Graduated Rad/Nuc Detector Evaluation and Reporting (GRaDER) Program evaluates commercial off-the-shelf (COTS) Rad/Nuc detection equipment against national standards adopted by the Department of Homeland Security.