NextGen FAA Technology Questioned

Dozens of airplanes flying across an air traffic controller s monitoring screen. Some are real. Others not. There s no way for a controller to know the difference.That s the hacking scenario many aviation experts warn could become a reality with adoption of a new method of tracking air traffic control.Called NextGen, it is a system of tracking and guiding airplanes using satellite based technology much like the GPS used in automobiles on the roads today. Stephen Stock reports in a story that originally aired Friday, Nov. 16