Strong Signals.

The article discusses the U.S. Air Force's GPS III (global positioning system) program, examining possible funding cuts by the U.S. Department of Defense, the development of the satellite constellation by Lockheed Martin, and the use of jammers to block GPS signals. Other topics include the dual launch of satellites by Lockheed Martin and the United Launch Alliance, the use of common practices to reduce costs, and upgrades to the Air Force's GPS constellation.