U.S. missile defense contractors are pitching ideas for improving the Ground-based Midcourse Defense system with alternative interceptor concepts in a gambit to provide near-term upgrades should the Pentagon proceed with the technically ambitious Next-Generation Interceptor program that could take a decade or more to field. The objective is to explore options for pairing a range of different warheads with existing boosters for the marquee homeland missile defense system that could be emplaced in the 20 new silos in Alaska that...
