This is the same nonsense as the National Guard guy bullying the freelancer about taking pictures in an airport ... and keeping a guy off a plane because the security guys essentially didn't like the book he was reading.
It's ludicrous.
If an airline has a question about a passenger, run him through the scanners two or three times -- wand him extensively, have two employees hand-search his carry-ons. But when he passes those tests, it's pointless to keep him off the plane: The airline has investigated thoroughly, and disproved its suspicions. Case closed.
Continuing to throw away our liberties, common sense and integrity in a misguided stampede for "security" is self-defeating.