The Pentagon's top weapons technology official vouched for the technical feasibility of using a kinetic interceptor to destroy ballistic missiles during the boost-phase of flight, suggesting an unmanned air vehicle armed with a special-purpose missile could provide near-term capability “against limited threats” to kill long-range enemy missiles immediately after launch. Michael Griffin, under secretary of defense for research and engineering, told reporters on Aug. 8 in Huntsville, AL, that he believes fixed-wing aircraft -- manned or unmanned -- armed with...