What is "behavior pattern recognition"?

What is "behavior pattern recognition"?

Behavior pattern recognition is a tool that the Israelis have used to look at how an individual behaves in an airport environment, to determine if there is a threat. We at TSA don't use behavior pattern recognition, but we have a tool similar to it called suspicious passenger observation techniques. We have trained employees to look for passengers who are acting out of the ordinary. Are they wearing a warm coat on a hot day? Are they sweating or nervous when they come to the airport security checkpoint? We look for things that we see that could trigger some kind of a response, to thwart any kind of a threat.