"Depending upon the circumstances of a detector alarm, DHS' Nuclear Assessment Program assets may also be activated to conduct a credibility assessment of a radiological or nuclear threat. For example, the Nuclear Assessment Program would conduct an assessment of a detector alarm if it involved the transport of illicit nuclear material. The Nuclear Assessment Program is coordinated through the Lawrence Livermore National Laboratory and provides a national capability to assess the credibility of communicated radiological and nuclear threats. It also monitors illicit nuclear material trafficking incidents worldwide. The Nuclear Assessment Program uses nuclear specialists and behavioral analysts to determine the credibility of a particular threat. The program is accessible to any federal or state agency and can be activated independently of a nuclear detector alarm. In FY 2006, the Nuclear Assessment Program performed 120 formal assessments". (DHS/OIG, DHS' DNDO Progress...., Dec 2007, p. 24)