Lockheed Martin GPS 3 satellite.

SMC on Oct. 7 exercised an option under a 2018 contract to purchase two more GPS 3F satellites from Lockheed Martin for $511 million.

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Sandra Erwin writes about military space programs, policy, technology and the industry that supports this sector. She has covered the military, the Pentagon, Congress and the defense industry for nearly two decades as editor of NDIA’s National Defense...