The Missile Defense Agency has tapped three companies to advance their respective concept designs for a Glide Phase Interceptor, setting up a three-way contest between Lockheed Martin, Raytheon and Northrop Grumman for a new Aegis guided missile optimized to defeat a new class of ultra-fast maneuvering weapons and give the Navy a second layer of defense against hypersonic threats. Nearly five years after MDA was directed by Congress to create a hypersonic defense program, the agency today announced the milestone...