Is aviation security mostly for show?

Is aviation security mostly for show? - CNN.com:

"There is a difference between indomitability and arrogant 'bring 'em on' rhetoric. There's a difference between accepting the inherent risk that comes with a free and open society, and hyping the threats.

We should treat terrorists like common criminals and give them all the benefits of true and open justice -- not merely because it demonstrates our indomitability, but because it makes us all safer."

I think this is an excellent article by Bruce Schneier. It takes courage to be free. Too many would rather just be safe^TM.