Nothing about that day was natural. In fact, being UNNATURAL is rather the hallmark of those events. Unnatural collapses, abnormal procedures, unnatural aeronautical events, unnatural sounds and noises, unnatural statements by people, etc etc.
Of course. What is rational about religious fundamentalism? How is that in any way "normal"? Stone your daughter to death because she was talking to a male who is not a relative? That's natural?