
The U.S. Air Force is nearing completion of a plan to restock its missile-warning satellite system, according to a key service official.The Air Force’s Space Based Infrared System (SBIRS) program, whose prime contractor is Lockheed Martin [LMT], is in the midst of acquiring six geosynchronous Earth orbit (GEO) satellites and four sensors on classified host satellites in highly elliptical orbit (HEO). For the past two years, the Air Force has been studying what comes after those spacecraft.“The Air Force has…