Being serious for a moment, finding a small metal part could have saved the Air France Concorde, so one wonders what Engine + Step Ladder could do.
Someone NEEDS to be identified and prosecuted for this. If you are going to humiliate the travelling public at security as they MAY be a risk to the aircraft and then go and discover a bloody great lump of metal your own runway then it's important that someone be held accountable.
I can't believe this hasn't had more exposure.