Michael Griffin, the Pentagon's new weapons-technology chief, has commissioned a project to develop by early July a portfolio of strategies to advance research and engineering work on 10 technology domains, a move that could signal a potential recalibration of U.S. military modernization spending in the Defense Department's fiscal year 2020 budget proposal. On April 20, Griffin commissioned the Defense Science Board to form a Task Force on Technology Strategy to provide "timely recommendations" within nine weeks on "specific elements of...