The Pentagon is looking to upgrade one of its most widely deployed missile-tracking radars with a powerful new antenna array, a move that could give the U.S. military an improved ability to detect and track advanced threats such as hypersonic weapons and maneuvering ballistic missiles. On July 24, the Missile Defense Agency invited industry proposals to design and build an “adjunct radar” system for the AN/TPY-2 -- a high-resolution radar used around the world to spot and track incoming missiles...