But, Ram, Rocket has a point.
If this draws attention, it gives the terrorists exactly what they want- a reaction. The U.S. is now forced to retaliate because of the very public attack on one of the symbols of commerce and military power. I suspect the day isn't over yet, for that matter.
Americans will cry for blood, and they will want it immediately. You're watching history right now- this was the single largest terrorist attack on U.S. soil. There will be a response, forced largely because of the public nature of the attacks.