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Unmanned helicopter used in police drill

(chinadaily.com.cn) Updated: 2011-09-09 13:59
Unmanned helicopter used in police drill

An unmanned helicopter is used in an anti-hijacking drill, part of an anti-terrorism drill held by the public security bureau of Guilin, South China's Guangxi Zhuang autonomous region, Sept 9, 2011.[Photo/Xinhua]

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