Workers prepare the Air Force's third Advanced Extremely High Frequency satellite for launch Sept. 12, 2013, near Cape Canaveral Air Force Station, Fla. The space vehicle was encapsulated into its fairing Aug. 27, 2013, before being mated to an Atlas V rocket. It was scheduled to launch Sept. 18, 2013. AEHF is a joint-service system that provides survivable, near worldwide, secure, protected, and jam-resistant communications for high-priority national military operations. (Courtesy photo/Lockheed Martin)