I have traveled by air about six times in the post-9/11 world. Transportation Security Administration (TSA) officials have always claimed that, in the event they physically open and examine your checked luggage, a note will be left. Well, at least two of those six times I’ve flown, my stuff arrived clearly-tampered-with but sans-note. The first time (heading to our honeymoon), TSA cheerfully ripped off the hangar-holder of my brand new suitcase rather than . . . you know . . . opening it to remove my clothes. But upon arriving home from travel last week, what did I find? The note. They do exist!