The Missile Defense Agency has approved the second of two competing design proposals for a Hypersonic and Ballistic Tracking Space Sensor, clearing L3Harris to proceed with Northrop Grumman in beginning to fabricate space vehicles critical to U.S. military plans to counter a new class of ultra-fast maneuvering weapons. On Dec. 20, L3Harris announced its HBTSS proposal passed muster with the Missile Defense Agency, clearing a major milestone called critical design review -- an assessment that considers the readiness of a...