Re: Snort!
The probability of a dirty bomb soon after 9/11 was a real one, particularly when I live in and was traveling to prime target areas. Dirty bombs often involve long-lasting isotopes like cesium, for which iodine is useless.
The iodine isotope (iodine-131) produced in nuclear reactors has a half-life of about a week. It's not going to "get here" from Japan over thousands of miles of ocean in any detectable amounts. Iodine pills are not a reasonable precaution for Americans right now. They are a reasonable precaution for those living near the Japanese reactors.
It's reasonable to think the Titanic might sink. It's unreasonable to think it might crash into Mount Everest.