US: The US Air Force has awarded Lockheed Martin Space Systems a USD 20 million contract modification for work on the fifth and sixth satellites in the Space Based Infrared System for missile warning, according to an announcement from the Pentagon. Congress has authorized the Air Force to spend USD 3.9 billion to purchase those satellites, called GEO-5 and GEO-6. The money from the modification will be used for planning and production parts including hinges, valves, structures and special test equipment, according to the announcement. The SBIRS system consists of dedicated satellites in geosynchronous orbit complemented by infrared missile warning sensors aboard classified satellites operating in highly elliptical orbit, or HEO.
Source: Space news