These unmanned flying robots - some as large as jumbo jets, others as small as birds - do things straight out of science fiction that can both amaze - and horrify. Much of what it takes to get these robotic airplanes to fly, sense and kill has remained secret. But now, with unprecedented access to drone engineers (including a rare interview with the "Father of the Predator," Abe Karem) and those who fly them for the U.S. military, NOVA reveals the amazing technologies that make drones so powerful. From cameras that can capture every detail of an entire city at a glance, to swarming robots that can make decisions on their own, to giant air frames that can stay aloft for days on end, drones are changing our relationship to war, surveillance and each other. And it's just the beginning. Discover the cutting-edge technologies that are propelling us toward a new chapter in aviation history, as NOVA gets ready for "The Rise of the Drones."