"The Radiological and Nuclear Countermeasure System Architectures Analysis (RNCSAA) program was initiated in February 2004 to address the threat of terrorist use of a radiological dispersal device, improvised nuclear device, or nuclear weapon in the U.S. through a comprehensive systems approach that emphasizes early detection and effective intervention capabilities at the federal, State and local levels". (DHS, NCRC First Annual Report, 2005, 81)