The Defense Department is set to begin reviewing Next Generation Interceptor designs, a major mid-point assessment in the $17 billion contest between Lockheed Martin and Northrop Grumman that will determine whether the respective proposals are sufficiently mature to proceed with developing prototype intercontinental ballistic missile killers. The Missile Defense Agency -- which raised the technical bar for the project -- is scheduled this month to conduct a preliminary design review of Lockheed Martin’s NGI proposal and a corollary review of...