A Global Positioning System IIF-series satellite undergoes final encapsulation inside a four-meter diameter protective payload fairing Oct. 21 at Cape Canaveral Air Force Station, Fla. GPS IIF will provide improved navigational accuracy through advanced atomic clocks, a longer design life than previous GPS satellites, and a third operational civil signal (L5) that benefits commercial aviation and safety-of-life applications. The Air Force and its mission partners are scheduled to launch GPS IIF-11 aboard a United Launch Alliance Atlas V 401 launch vehicle Oct. 30 from Space Launch Complex 41 at Cape Canaveral AFS, Fla. (United Launch Alliance courtesy photo)