This special looks at the role of air traffic controllers in the airline industry, and takes a look at the Next Generation Air Transportation System, a new technology meant to eliminate mid-air collisions by reducing overall dependence on radar and radio, as well as delegating some of the air traffic controllers' tasks to computers onboard each plane.
Episodes revisited: 4x07-Out of Sight, 2x06-Missing Over New York, 5x10-Phantom Strike, 2x04-Deadly Crossroads.