El-Al also does a thorough background investigation on each passenger before they even get to the plane. They also look for the person (terrorist), while we tend to look for the weapon.
I think some cross training/consultation wit El Al is in order.
You put 14 arabs on my flight with music cases and I'm outta there. Abdul the floutist or Mohammed the tuba player can be as offended as he wants. Better safe than sorry. It only took 19 of their kind to kill thousands of us.