RQ-3 Dark Star UAVThe RQ 3 DarkStar was designed as a "high altitude endurance UAV", and incorporated stealth technology to make it difficult to detect. The DarkStar was fully autonomous: it could take off, fly to its target, operate its sensors, transmit information, return and land without human intervention. Human operators, however, could change the DarkStar's flight plan and sensor orientation through radio or satellite relay. The RQ 3 carried either an optical