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GPS IIF-2
A United Launch Alliance Delta IV rocket blasts off from Space Launch Complex-37 at Cape Canaveral Air Force Station, Fla. (July 16, 2011) – 2:41 a.m. EDT with the Air Force’s Global Positioning System (GPS) IIF-2 payload. This launch marks the 50th successful GPS launch on a Delta vehicle. GPS IIF-2 is the second in a series of next generation GPS satellites and will join a worldwide timing and navigation system utilizing 24 satellites in six different planes, with a minimum of four satellites per plane positioned in orbit approximately 11,000 miles above the earths’ surface. The GPS IIF series provides improved accuracy and enhanced performance for GPS users.

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