Space.com:


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. 

Under the new contract, Lockheed Martin will manufacture, assemble, test, and deliver the three Next-Generation Overhead Persistent Infrared (OPIR) satellites, as well as ground mission software and engineering support for launch vehicle integration, by May 2028, according to the Jan.4 contract announcement.



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