The Missile Defense Agency is bracing to tack on another year to the Ground-based Midcourse Defense development and sustainment contract, potentially extending Boeing's run as prime contractor for the marquee homeland defense weapon system to 14 consecutive years, even as the government is working to inject new competition into the GMD program. In a March 3 notice , MDA disclosed a new delay in the GMD schedule that necessitates extending the development and sustainment contract -- which Boeing has held...