Says you and nobody else. When living tissue is exposed to radiological isotopes the cellular structure rapidly begins to break down, and there's no "cure." When you hear about what a nuclear war would be like, and people say that the people who died in the blasts would be the lucky ones, it's this that they're talking about.

Radiation sickness. Your hair and teeth begin falling out, your skin pales. Your organs begin to liquefy, and you die a death similar in experience to that of cancer but much more severe in the anguish.

If radiological material is released in a densely populated area, or say, perhaps into a water supply - you're gonna have a lot of terminally ill patients on your hands. That's especially true if a large amount of material was dispersed.

Your hear the government speak of the threat posed by a dirt bomb made from the small amount of radiological material in hospital waste - imagine how widespread the effects could be with the material which could be acquired from a nuclear waste dump.

...How many people would you say are in downtown LA right now and how many customers does your local water company have? Compare that to the mere 3,000 deaths on 9/11.