To be simple, I think that after 9/11, there could be any type of terrorism-sounding alert and NY would be up in a frenzy. It's the effect of what happened, and it's probably a good thing. People need to feel safe, security needs to be tight, and you never know whether someone is going to try something again. Caution isn't always a bad thing. In Israel, I know it prevents terrorist attacks... they need to do the same in America.
