Navy officials will release a roadmap charting near-term investments in directed-energy weapons later this month, as the service and contractor Northrop Grumman begin work to develop a high-powered laser for at-sea testing in 2018. The roadmap, first announced by Navy Secretary Ray Mabus last summer and originally expected to be released at some point in the fall, will now be published after the Defense Department's fiscal year 2017 budget request is sent to Congress, Rear Adm. Mat Winter, chief of...