TSA also plans to train screeners in the art of observing slight facial movements that indicate a person is lying.
Although civil libertarians and top Democrats in Congress say the techniques raise serious questions about privacy rights and racial and ethnic profiling, TSA officials say the behavior-detection officers may play a more important role in thwarting terrorist attacks than traditional screening techniques.
Kip Hawley: "A behavior-detection officer will detect somebody no matter what the weapon is."
To become a behavior-detection officer, screeners undergo four days of classroom training and three days of supervised on-the-job work.
