What did we learn from 9/11 Commission Report which concluded that the attacks had been?

listen, no terrorists form OUTSIDE has come and got us; but we have found many terrorists in the US right now! so no, its not a win. this also means that we have heavy duty security watching every ones every move. does that seem right? i don't know i'm still working on it too. you can find many different sites with info on 9/11. but which ones to believe is the problem.