After 9/11, country music star Alan Jackson wrote a haunting song, “Where Were You When the World Stopped Turning?” A full 90% of Americans over 30 know — do you?

My own 9/11 memory is wracked with survivor’s guilt. If not for a last-minute change of travel plans to guest on a late-night political talk show, I would have been on American Airlines Flight 77 when it was flown into the Pentagon by a group of demonic jihadi murderers.