<cuz when a bomb lands on your house some pills are really gonna save you >
Its not for the explosion, its for radioactive fallout.
No one is being hysterical here. If someone told you 3 months ago that terrorists were going to fly 2 planes into the WTC and one into the Pentagon and start germ warfare in the US, you would have called them hysterical wouldn't you?
Nothing is out of the realm of possiblities now no matter how farfetched it may seem.