In addition to increasing safety and reducing delays, NextGen is also "one of the [Obama] administration's potentially greener measures," according to this post on The Wall Street Journal's Environmental Capital blog. Flying straighter, more efficient routes will significantly cut down on fuel burn, helping to reduce emissions. UPS reportedly has seen a 38% decrease in emissions for its 757 aircraft since introducing satellite-based navigation at its Louisville, Ky., hub last year.

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