Satellites for the Space Development Agency Tranche 1 Tracking program are in production at L3Harris’ manufacturing facility in Palm Bay, Florida. Credit: L3Harris

WASHINGTON — The U.S. Space Force’s Space Development Agency has awarded contracts worth about $1.75 billion to L3Harris Technologies and Sierra Space to build the next group of missile warning and missile defense satellites for its proliferated low Earth orbit constellation, the agency said July 13.

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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...