Now why would our F.B.I. cover up the terrorist attack
I just read over 200+ post on this thread with opinions given that covered almost every possible reason why the FBI (and it is implied our government) is not shouting from the rooftop that this was a terrorist act. I thought I would give my two cents worth.
There is a war coming, (much closer to WWII then anything we have seen so far). We are not ready.
This administration (like most western governments) have to make preparations without triggering the fight before we are ready.
The first battle will be against Iraq. Then events will take over. I would expect many of the sleeper cells that we have not found by then will be activated. At that point we will see the government move against non-citizens in this country.
At least that is what I believe is going on.