Here is a great article from Salon titled Why FEMA Failed. It describes how FEMA has been changed by the Bush Administration in light of 9/11.
One has to wonder if the terrorists have won? Because of 9/11 we have reduced our preparedness for natural disasters even though they are guaranteed to happen. More people will probably die from Hurricane Katrina than from the Twin Towers attack and a lot of those deaths may have been avoidable.