Impressive -- they nailed a probation violator who apparently didn't know he was on probation, and Nico brags about their "layers of security" Queue up the them music from Dragnet before you start reading this one ... Modesto Bee: Back-seat Driver: Roaming airport screeners look for people with something to hide A federal officer was watching passengers at Sacramento International Airport on Wednesday when one caught his eye. A young man in line, unshaven and carrying a backpack, apparently looked suspicious. The officer was not a typical Transportation Security Administration screener. He was a specially trained Behavior Detection Officer. BDOs work in the agency's Screening of Passengers by Observation Techniques program (SPOT) and are trained to study a person's face and body language for hints of his mental state. They roam all parts of the airport, including curbside....The young man at the Sacramento airport apparently displayed something unusual. TSA officers pulled him aside for secondary screening, ran a computer check and discovered he was wanted for an out-of-county probation violation. Illegal detention and warrant check without probable cause? And what does a 6-year-old drug conviction and probation have to do with airline security?