The one thing that still strikes me about 9-11 is how ingenious it was. They couldn't fly a plane over here and drop bombs on us, so they hijacked planes instead and turned them into bombs. The hijackers didn't need explosives or WMDs. Just some box cutters.
Nobody saw it coming and thus they were able to pull it off at first. But the novelty wore off before the attacks were even finished. Once the passengers on United 93 found out via cell phones that other planes had been used to strike the World Trade Center and the Pentagon, they fought like hell and brought the plane down.
That's why there will never be another 9-11 like that. It doesn't have anything to do with what President Bush has or has not done with regards to Homeland Security. It is simply a matter of a change of perspective of airline passengers. A terrorist today could not take control of a plane using just a razor blade or a knife. People today just aren't going to let them take control of a plane without putting up a fight. The days of passengers sitting back on hijacked planes expecting that they will just be flown to some other location where the hijacker will seek asylum are over. In fact, I would bet there have been fewer hijackings since 9-11 because of this. I don't actually know if that is true, but that would be my guess.
And even if someone did get control of a plane, our military would not hesitate to shoot it out of the sky before it could get near any major target areas.
What still worries us, however, is that bin Laden probably knew it was a one-shot deal and is now busy plotting other very different, but equally ingenious ways to attack us. That fear of the unknown is what has kept the Bush administration propped up these past five years. But now, at long last, people are finally starting to realize that this president, the worst president in modern history, is not making us safer and more secure. To the contrary, he has depleted our military resources, inflamed Muslim passions against us and provided al-Qaeda with incredible recruiting opportunities which they are currently using to great effect in Iraq and Afghanistan to launch suicide bombing attacks everyday.