Nice to have confirmation though, thanks. Ironically, I was once called upon to open my own luggage in front of security personnel while en route to see you, though that was a random spot check rather than the result of a questionable X-ray (at least, I assume it was; they didn't say anything about cause for suspicion, and if I'd felt like being an ass I would've brought up the Fourth Amendment, and probably been reminded the Constitution doesn't guarantee the right to interstate air travel). On the other hand, I'm pretty sure my checked luggage was opened at each stage of my trip here, and I never got a note (they DID apply more tape to it though, which I appreciated, since the straining latches were trying to give way before I even left the house). Maybe not in Copenhagen, but the Danes are, shall we say, interesting.

Some of it does seem worth a try, behavioral rather than racial profiling in particular; as noted in the article, there's nothing bigoted in being suspicious of someone based on how they act rather than how they look. That's just basic security. Of course, when that brown skinned dude over there is as likely to be IDF as PLO I suppose they don't have the luxury of that brand of bigotry. I'm not sure Americans would be mollified by long lines just to pick up friends and family at the airport though. Perhaps as importantly, if your primary concern is a plane blowing up in mid-air, or being hijacked, checking out the guys who empty the airport trash dumpsters is a waste of time and resources.