June 29, 2017 Northrop Grumman wins U.S. Air Force contract to modernize GPS/INS systems By GPS World Staff
June 21, 2017 New reports confirm exceptional performance record for civil GPS service By GPS World Staff
March 6, 2017 Lockheed responds to report on Air Force review of GPS III propulsion By GPS World Staff
December 15, 2016 US Air Force approves Lockheed’s ground control upgrade for GPS III By GPS World Staff
