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May 27, 2009 7:13 AM

Some GPS satellites could fail before replacements arrive

GPS satellites originally scheduled to head skyward in 2006 in a $7 billion-plus program aimed at keeping the system going are awaiting launch in 2010. The delay means pieces of the high-altitude network could start falling out of service as early as next year. Such decay in the system could ultimately foul everything from the accuracy of U.S. bombs to the reliability of your neighborhood cash machine.

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