we could be used to bring items airside to be handed to someone else.
There are hundred of minimum wage ramp workers from all corners of the World who have much less to lose and would be easier to try and buy off to have something nasty carried airside.
As a matter of fact, I can't recall any of the ramp workers being checked anywhere near as thoroughly as flight crews are when going through the terminal staff security checkpoint. They're just basically waived through.
I wonder what size ceramic blade you could hide in a Dastar. Oh wait, it would be very un-PC to try and check that. Better not...