There are all these terror warnings issued in the US lately. Americans have no idea what that means, nor is there a culture that has a way of identifying or responding to problems. For Americans "to be on guard" is somewhat rediculous. There are countries in the world where if you see a suspicious package or person, there is someone to call, and every civilian knows what to do, and how to respond, and has an instinct for what might be a terror concern. Americans, fortunately, have never had to deal with such a thing, and they have thus far never learned how to cope.

Again, this has not realy been a problem. There has yet to be something in the US that could have been prevented if only Americans were more on guard in some way. Let up hope it does not turn to that.