Sadly, we have to realise that if a fanatic really wants to bring down a plane, there's not a lot that we can do. With modern explosives, you could hide enought in a small torpedo-shaped vial to do real damage. And the passenger could insert that vial in a body cavity (at least one springs to mind) and remove it in flight. That's not to say it's not important to have tight security -- but let's not kid ourselves that we'll ever be out of danger. Geoff in Harare