The Missile Defense Agency's plan for the Redesigned Kill Vehicle -- a multibillion-dollar development project to improve the nation's defenses against a potential North Korean or Iranian intercontinental ballistic missile -- lacks Defense Department-wide support and is "in jeopardy" of meeting a fate similar to a terminated 2013 MDA project deemed too expensive. That is one finding in the Government Accountability Office's sweeping 2017 audit of the Ballistic Missile Defense System, a collection of development, acquisition and operational programs that...