Armed police move in to rescue hostages inside a bus during an anti-terror exercise in Chuzhou, East China's Anhui province, Aug 24, 2010. Fifty special police officers train in hostage rescue, interception, dismantling explosives and other tasks during the exercise. [Photo/CFP] 

Armed police move in to rescue hostages inside a bus during an anti-terror exercise in Chuzhou, East China's Anhui province, Aug 24, 2010. [Photo/CFP]