I'm a bit torn in this thread. On one hand I keep my belt on as well (it doesnt alarm either) but to avoid discussion about it I have my sweater or shirt hanging over it.

If someone tried to "smuggle" things like a knife or the live onboard then something smells fishy. This what has been described here as "artful concealment" should certainly warrant a secondary inspection and it was a severe thing that was hidden LEO involvement.

Just because someone cant get through the cockpit door or blow the plane I would not feel comfortable with things allowed to be carried onboard the plane. Yes, the plane isnt leaving it's route but in the back some idiot is stabbing folks... I think primary priority should be the safety of those onboard as the most vulnerable and not those somewhere on the ground. A focus that went a bit in the wrong directtion after impressive and shocking pictures on 9/11. Now considering in F/C there are full sets of cutlery handed out at many airlines I still have to be reasonable and consider some things (incl travelling) as the risk of life.