High Quality Content by WIKIPEDIA articles! The RQ-170 Sentinel (colloquially known as The Beast of Kandahar) is an unmanned aerial vehicle (UAV) developed by Lockheed Martin and operated by the United States Air Force (USAF) for the Central Intelligence Agency. While the USAF has released few details on the UAV`s design or capabilities, defense analysts believe that it is a stealth aircraft fitted with reconnaissance equipment.