In a vision shared by innovators, entrepreneurs, and planners in both defense and civilian contexts, the skies of the future will be busy with unmanned aerial vehicles (UAVs). Unseen but central to the realization of this vision is wireless communication within and between those future fleets of UAVs that is reliable and resistant to both unintentional and ill-willed interference. “If these UAVs can’t communicate, they don’t take off or they don’t operate the way we want them to,” said Josh Conway, a program manager in DARPA’s Microsystems Technology Office. “As wireless communication becomes part and parcel of all kinds of platforms and devices in the coming years, we will need assured communications, especially for command and control, but for other things too, like data transfer.”