Chinese anti-hijacking special policemen participate in an anti-terror drill at a training base of Chengdu Armed Police Headquarters on September 28, 2005 in Chengdu of Sichuan Province, China. (Photo by China Photos/Getty Images)

A coastguard fights against a simulated terrorist during an anti-terror drill to prepare security guard services for the Olympic sailing event on April 24, 2008 in Qingdao of Shandong Province, China. (Photo by China Photos/Getty Images)

Chinese armed police officers surround a coach during a simulated terrorist hijacking as part of an anti-terror drill by the Shanghai Armed Police Corps on January 9, 2007 in Shanghai, China. (Photo by China Photos/Getty Images)

Firemen cut barriers during an anti-terror drill themed “To Welcome Olympic Games, To Ensure the Security” at Datianwan Stadium on July 2, 2008 in Chongqing Municipality, China. (Photo by China Photos/Getty Images)

Members of the police task force apprehend a terrorist played by a colleague during an anti-terror drill on November 27, 2004 in Nanjing, China. (Photo by China Photos/Getty Images)

A member of the bomb squad demonstrates how to handle a bomb during an anti-terror drill on November 27, 2004 in Nanjing, China. (Photo by China Photos/Getty Images)

Two members of the Special Weapons And Tactics Team (SWAT) escort a simulated suspect during an anti-terror drill August 4, 2006 in Nanjing of Jiangsu Province, China. (Photo by China Photos/Getty Images)

Two policemen escort a simulated suspect during an anti-terror drill August 4, 2006 in Nanjing of Jiangsu Province, China. (Photo by China Photos/Getty Images)

Chinese policewomen march during an anti-terror drill on November 27, 2004 in Nanjing, China. (Photo by China Photos/Getty Images)