I'm thinking all the above, but I could be wrong. Look at how quickly the Patriot Act was passed after 9/11. Because an attack on American soil has never happened, with the exception of Pearl Harbor which at the time wasn't a state, they needed a major in your face event to justify and manipulate the public into believing that invading Iraq and pretty much endless wars on "terrorism" where the American thing to do. There was an air of vengeance at the time, but by now we should know any war labeled as such i.e. war on drugs, always turns on the American people. Which is what happened with the Patriot Act. After that is when TSA, Homeland Security and many other government agencies were established for "keeping us safe" but in actuality was just to impose government heavy handedness on the American people. I actually awakened about 7 years before this event, so of course the questions began immediately. Watching a few videos pretty much told me all I needed to know. So that's why my answer is possibly all that you asked in your question is the reason. I don't have all the answers for that day, but this is my view of that situation.