What is the scenario for the TOPOFF 4 FSE?
The T4 FSE is based on National Planning Scenario 11 (NPS-11). The scenario begins as terrorists, who have been planning attacks in Oregon, Arizona, and the U.S. Territory of Guam, successfully bring radioactive material into the United States. The first of three coordinated attacks occurs in Guam, with the simulated detonation of a Radiological Dispersal Device (RDD), or “dirty bomb,” causing casualties and widespread contamination in a populous area. Similar attacks occur in the hours that follow in Portland and Phoenix. An RDD is not the same as a nuclear attack. It is a conventional explosive that, upon detonation, releases radioactive material into the surrounding area. Although it does not cause the type of catastrophic damage associated with a nuclear detonation, there are severe rescue, health, and long-term decontamination concerns associated with an RDD.
