UAV applied to search drug fields in Beijing
Police officers manipulate an unmanned aerial vehicle (UAV) to search illegal drug fields in mountain areas in Yanqing county of Beijing on September 4, 2014. The 2.1-meter-long unmanned plane equipped with probe on its underbelly has been used by local police to search drug fields in mountain areas in north Beijing. No farmlands planted with drugs have been detected so far. [Photo: China News Service/ Jiang Shengsong]
