Also, if you check how the Israeli's, the most targeted by terrorists and having the safest airports in the world, do it check this out (no porn scans or molestations):
Also, keep in mind the following facts:
"And by "contradictory," here's some blockbuster news: Although the x-ray and metal detector rigmarole is mandatory for pilots and flight attendants, many other airport workers, including those with regular access to aircraft--to cabins, ...cockpits, galleys, and freight compartments--are exempt. That's correct. Uniformed pilots cannot carry butter knives onto an airplane, yet apron workers and contract ground support staff--cargo loaders, baggage handlers, fuelers, cabin cleaners, caterers--can, as a matter of routine, bypass TSA inspection entirely."
...and let's not forget that a pilot can simply crash the plane into the ground.