The Defense Department, as part of a high-profile annual military exercise in Alaska, demonstrated an innovative use of a large number of small, unmanned aerial vehicles, a precursor to exhibiting micro-UAVs capable of autonomous swarming behaviors and a move designed in part to display military advantage over China and Russia. The Strategic Capabilities Office conducted last week's demonstration, according to a senior Pentagon official. The office is a Pentagon shop formed in 2012 to spearhead classified projects that cultivate cutting-edge...