Let’s also remember that in the months following 9/11, the expectation among all of us, expert and layman, was that this was just the beginning. Other attacks would come, more horrific and with different means. But they didn’t.
They did, on a smaller scale, in London, Madrid, the South Pacific and elsewhere. But not here, though there were attempts that were thwarted.
The U.S. cranked up our security and intelligence measures, in often wasteful and misguided ways, but suffered no more big and successfull attacks.
Who would have predicted this seven years ago? Not many.