This video compares today's airspace with a future airspace that uses tools and how traffic flow improves. A good way to show how we're working to make a very complex system more efficient, which helps the environment because we reduce fuel use and noise around airports. #flyNASA | NASA - National Aeronautics and Space Administration

On 9/11/01, off-duty Air Traffic Controllers came in to provide relief and help land the remaining planes that were mid-air during the closure of U.S. airspace. Watch 9/11: Control The Skies tonight at 11/10c. | National Geographic TV