By the time the Army got through training me on all this stuff, spare me the chem and bio, and hope I die quick when the nukes blow.
Armies have the means of effectively delivering and defending against bio and chemical agents, but terrorists and civilians do not. On the battlefield, it is also reletively easy to identify threats or receive warning of such (in the gulf war everybody spent most of their time in thier MOP suits and had to put their masks on everytime radar picked up a missle or aircraft headed torwards our troops - which was the only way to be sure they would have time to done their masks - trained to do so as they were).
And like I said, I spent 48 hours in a gas mask once. I'd rather just take a deep gulp of Sarin Nerve Gas than go through that pain again. All this Bio/Chem war talk is a bunch of crap.
One nuke is not the end of the world. Its time to survive.