"The archaic system of an X-ray machine and metal detector cannot pick up other potential threats posed by passengers, " Baum says.

CNN: Behavioral screening -- the future of airport security?

Abdulmutallab then passed through a walk-through metal detector and put his shoulder bag through an X-ray screening machine, Demuren said.

CNN: Obama orders review of flight screenings

It had a radiation detector, an X-ray crystallographer, and a complete weather station.

NEWYORKER: The Martian Chroniclers

Demuren said the suspect underwent regular screening -- walking through a metal detector and having his shoulder bag scanned through an X-ray machine.

CNN: STORY HIGHLIGHTS