Buzz, paying cash, no luggage, YUP, you would think that factor alone would be cause for an extra security check. I'm not sure if he bought a ONE WAY ticket but if so, well DAM, there is just no question we got a major red flag going on here.
Ron,
Having worked at Honolulu Airport for many years it sure can get boring. That would spice things up a bit!
So, these "detectors" do the foreign countries in question here have them?