These terrorists willingly and precisely took out the WTC towers. The collapses were no accidents. The planes weren't meant to shear the building in half. They fell the way they planned. Civil Engineer here, so I know about buildings. Irony? For my capstone class Senior Year was to design the Morgan Stanley Dean Witter building that is being built right now in NYC. That will probably be accelerated for building now.

Now if they had the know how of doing that, don't think for a moment they can't manage to attack at even a larger scale. You don't know where these terrorists are. They could already work in the nuclear power plants. They could be driving our trains. They could be every single place where they shouldn't be. The next attack will probably be known well after too many people are dead. This isn't over. This is far from over. I'm preparing for the worst myself. I'm legitimately scared, though I am comfortable with what I've accomplished in 24 years. I would like 80 more, though. Let us use our reasoning to make sure we all live to ripe old ages.