Lockheed Martin has been awarded a $4.9 billion contract to build a triad of missile-warning satellites for the U.S. Space Force

The satellites will monitor Earth from the geosynchronous orbit, an orbit at the altitude of 22,000 miles (36,000 kilometers), where satellites appear suspended above a certain spot on Earth. There, they will provide an initial warning of ballistic or tactical missiles launched from virtually anywhere in the world. 

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