United States, April 16 -- Lockheed Martin has been awarded a contract worth up to $105 million by the U.S. Space Force to continue modernizing and sustaining the Global Positioning System (GPS) ground control network. This will support resilient positioning, navigation, and timing (PNT) services from the GPS constellation for military and civilian users.The new contract expands on a decade of work under the Space Force's Architecture Evolution Plan, during which Lockheed Martin has steadily modernized the GPS ground segment. Under the agreement, the company will support launch, early orbit, and disposal operations for GPS IIIF space vehicles. It will also enhance the capabilities and resiliency of the GPS enterprise for military and civili...