The Pentagon is developing a common set of airborne sense-and-avoid requirements for unmanned aircraft and plans to test the technology in a major demonstration this fall, according to an official leading the effort. Mounted on unmanned aircraft systems, this technology is designed to help flying drones detect and avoid nearby planes. And through its autonomy feature, it is also designed to help mitigate the problems and concerns generated when a drone loses its link with the control station. The Air...