ORLANDO, Fla. -- The suspect arrested at Orlando Regional Airport on Tuesday was caught by a special TSA worker called a behavior detection officer. That person's job is to pick out passengers who act suspiciously as they pass through the terminal and security gates.

---

SLIDESHOWS: Suspect Searched | Backpack, Items Searched
RAW VIDEOS: Suspect Searched | Backpack, Items Searched
TSA LIST: See The List Of Prohibited Items
Flight Tracker: Check OIA Arrivals And Departures

---

The officers are specially trained experts who look at everything from a person's mannerisms to his facial expressions to body language. The technique is called screening passengers by observational technique or spot. They are trained to pick out people who might be threats.

TSA officials will not say how many of them are at Orlando International, but one of them was near the Air Jamaica ticket counter, spotted the man and was able to stop him before he checked his bag.

People who were supposed to be on the man's flight said they are very happy the TSA had the expert watching.

"I was really startled when I heard this. I guess the guys got him. I don't mind a delay as long as I'm safe," said passenger Noel Bridgett.

TSA officials have the behavioral officers at around 40 airports across the country and said they have helped in a significant numbers of arrests. They will not say exactly how long the officers have been at OIA.