September 13, 2013 GPS III and OCX Satellite Launch, Early Orbit Ops Successfully Demonstrated By GPS World Staff
July 9, 2013 Northrop Grumman to Offer Improved GPS-Challenged Navigation and Geo-Registration Solution for U.S. Air Force By GPS World Staff
March 28, 2013 Parkinson Presentation at Smithsonian Now Online, Exhibit Opens April 12 By GPS World Staff
January 23, 2013 Exelis Wins Air Force Contract to Research Low-Cost GPS Alternatives By GPS World Staff
