If anyone is curious, this is the reason why they do this test...
2006 transatlantic aircraft plot - Wikipedia, the free encyclopedia
I'm no fan but with bad guys in the world, this is a necessary evil. With no security or random checks (to keep things....random) every crazy whaco would leave the movie theaters and Sikh temples, head straight to American or United and effective kill the airline industry.
These dumb*ss searches are already killing the airline industry. Caving in to tyranny is NOT a necessary evil.