Originally Posted by MSP-area paper

Jim Welna, deputy federal security director for the Minneapolis-St. Paul, ... said the new units will scrutinize travelers for anxious, frightened or deceptive behaviors. Travelers who arouse TSA's suspicions will be questioned, and their answers scored against a secret index. A high score will prompt a call to airport police, who must then decide whether to ask travelers more questions, call counter-terrorism agents, or send them on their way.