A "Dirty Bomb," or radiological dispersal device, combines conventional explosives with radioactive materials. Its primary purpose is to spread contamination over a wide area, causing panic and disruption rather than mass destruction. The radioactive materials can come from various sources, including medical or industrial equipment. While a Dirty Bomb is not designed to cause immediate widespread casualties like a nuclear bomb, it poses significant health risks due to radiation exposure. The cleanup process can be lengthy and costly, and the psychological impact on affected communities can be severe, leading to fear and anxiety about radiation and safety.