The Army plans to demonstrate a mobile, directed-energy weapon sometime next year as it continues to work through "some challenges that have to be overcome," in developing the technology, according to a service official. Maj. Gen. William Hix, director of strategy, plans and policy in the office of the deputy chief of staff (G-3/5/7), said at the Directed Energy Summit March 29 in Washington that some of those directed-energy challenges include improving the mobility, size, weight, power, all-weather capability, and...