LAUNCH DATE:May 15, 2013

Atlas V GPS IIF-4

A United Launch Alliance Atlas V rocket blasts off from Space Launch Complex-41 carrying the fourth Global Positioning System (GPS) IIF-4 satellite for the U.S. Air Force from Space Launch Complex-41. This is the fourth ULA launch this year and marks the 70th launch success in the 77 months since ULA was formed. GPS IIF-4 is the fourth 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.