Deadman wrote:

And you do not get used to being attacked, every time you do get attacked, your weaknesses have been exposed so you should do something about it to avoid it happening again, thus becoming stronger and safer (we hope).
If the sears tower were hit with two airplanes full of people and it crashed to the ground killing 3,000 people, would it be as shocking as it was on 9/11?

If it happened a week later, would it be yet as shocking?

If you've ever known a soldier who had experienced combat, or a police officer, you're realize that repetition does wear you out and numb you.  Were it not so, War on Terror vets would be coming home happy and cheerful without PTSD or daydreams of seeing bloodied and blown up bodies.

But I see your point in a tactical sense as you explain that your weaknesses have been exposed.  Not sure how that applies to our country since we have the exact same weaknesses we had on 9/10.  It is exactly as easy to attack this country today as it was on 9/10.