Roboticist’s worst nightmare: friendly fire mistake leading to deaths by Hellfire missles. “Currently, Air Force Predators and Reapers, the high-flying hunter-killer drones, are logging 48 24-hour air patrols a day, moving toward a goal of 65 in 2013. The aircraft are prized for their intelligence gathering proficiency and ability to pinpoint targets, reducing the risk to U.S. pilots and other personnel.”