OK, I'll bite. Mind you, I haven't read each and every post, so if I repeat some one else's idea, excuse the redundancy.

If I were a terrorist, first thing I would not do is bother with biological, or chemical attacks. I'd find the best computer hacker money could buy, get this individual, or individuals to hack into the ConEd computer system, get the codes, and proceed to shut off the electricity to Boston, New York City, Philadelphia, and Washington D.C. Then I would make my demands known through my lieutenants in the US. If they were not met, then Chicago, LA, and while I'm at it the entire West Coast would go black.

Next targets would be communcations satelites orbiting Earth.

Hmmm, on second thought, switch the two plans of action. First hit the satelites, THEN go for the electrical grid. Neat, clean, effective, and I'd be sure to have my way.
Jim