The Missile Defense Agency is soliciting ideas for a kinetic interceptor to destroy ballistic missiles during the boost-phase of flight, a first step in establishing a parallel -- or potential rival -- program to the technologically ambitious effort to develop a speed-of-light weapon to kill long-range enemy missiles immediately after launch. On May 21, MDA asked industry for proposals for high-speed, guided missiles capable of locking on to an intercontinental ballistic missile seconds after launch, and then moving fast enough...