How do you get a knife or box cutter on to a plane?
I hate to disillusion people who might think that we in Europe have secure airports but this actually happened to me last week in LHR.
As I came to the metal detectors in terminal one en-route to Prague I watched the guy in front of me take a swiss army knife out of his pocket, put it in the plastic tray with his keys and walk through. He set it off anyway so while he was patted down I walked through and watched with amazement as, after the patdown, the security guy actually handed the guy his keys and the knife.
Security is only as good as the people who apply it.