] At one major airport, for example, the check-in agent
] writes a large red "S" on your boarding pass if you're
] designated for this search; you don't have to be a rocket
] scientist to know what this means. So only clueless bad
] guys will be searched, and groups of bad guys will be
] able to transfer any contraband into the bags of group
] members who won't be searched, with plenty of time after
] the security checkpoint to redistribute it as desired.

In case it never occurred to you...

ATAC: Abusable Technologies Awareness Center: Security Theater