Link: GPS Modernization Project Aims to Improve Accuracy

The global positioning system (GPS) is undergoing a modernization effort that will result in increased accuracy and reliability, as well as advanced applications that could impact public-safety and mission-critical communications.

The U.S. Air Force awarded a contract to Lockheed Martin Space Systems in 2008 to develop the next generation of GPS satellites in an effort to replace aging GPS equipment and introduce new capabilities. The initial contract included development of two space vehicles (SV) with an option for up to 10 additional space vehicles. In 2012, the U.S. Air Force contracted with Lockheed Martin for production of two additional satellites.

See the full article here: Mission Critical