WASHINGTON — The U.S. Space Force awarded Lockheed Martin a $105 million contract to support ground control operations for the next generation of GPS satellites, as the Pentagon moves to wind down a long-delayed replacement program led by RTX.

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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...