U.S. Air Force Space Command, led by Gen. William Shelton, last month declared the first Space-Based Infrared System (Sbirs-1) satellite designed for use in geosynchronous orbit (GEO) operational and recommended to U.S. Strategic Command, which will operate the missile-warning spacecraft, that it begin accepting missile attack messages from it. Sbirs GEO-1 was launched in May 2011. Sbirs, built by Lockheed Martin, is an $18 billion program to field new space-based infrared missile ...


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