The Pentagon, aiming to expand its investment in cutting-edge technologies, is planning new joint program offices focused on hypersonic missiles and artificial intelligence, Defense Secretary Jim Mattis told lawmakers today. Mattis, who appeared before the House Armed Services Committee to discuss the Defense Department's fiscal year 2019 budget request, said Under Secretary of Research and Engineering Mike Griffin is a "varsity player" who is hard at work on establishing new programs, with hypersonics as his top priority. "We're going to...