global positioning system
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US Air Force set to launch 1st next-generation GPS satellite, built in Colorado
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UPDATE, 12/18: The launch of a new GPS satellite has been postponed for one day because of an unspecified problem with the SpaceX Falcon 9 rocket that will put the satellite in orbit. After months of delays, the U.S. Air Force is about to launch the first of a new generation of Colorado-built Global Positioning…



