The Missile Defense Agency has identified the nine companies that proposed conceptual designs for a Space Sensor Layer, establishing a competitive field for a network of orbiting satellites optimized to give U.S. military commanders a long-desired capability: the means to continuously track long-range missiles from launch to impact -- a tool deemed essential to defend against hypersonic threats. Missile Defense Agency Lt. Gen. Samuel Greaves identified the nine companies, not previously made public, in response to a request from Inside...