What's holding the airline sector back, in addition to high jet fuel prices, and keeping the likes of AMR's (NYSE: AMR) American, Delta (NYSE: DAL), UAL's (NYSE: UAUA) United, Southwest (NYSE: LUV), and Continental Airlines (NYSE: CAL) from realizing their potential?
Many economists and analysts would agree that, along with other infrastructure and related investments, the nation's air traffic control system must be upgraded, if the United States seeks an air transportation system capable of maintaining a high level of safety -- and better service -- in the 21st century's more-crowded skies.
Further, that the United States has not already replaced an essentially generation-old air traffic control technology with a modern system is a serious demerit, and one that has -- through delays, cancellations, and other problems -- taken a toll on the flying public and the major carriers.
John F. Kennedy International Airport has long been a historic gateway to the United States, but in today's world, 
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