
The Air Force is pursuing alternative industry sources to provide the navigation payload for its next generation Global Positioning System (GPS) III satellite constellation in case prime contractor Lockheed Martin [LMT] and subcontractor Exelis [XLS] can’t solve their problems that have delayed delivery and contracted launch dates. Air Force Space Command (AFSPC) chief Gen. William Shelton said Friday though the service has reached out to others and will continue to look for other sources, he is not yet ready to…