People rush out from the Millennium Seoul Hilton Hotel while taking part in the anti-terror exercises simulating a chemical weapons attack in Seoul, South Korea, on Oct. 20, 2010. The drills came ahead of the G20 summit to be held in South Korea on Nov. 11-12.[Xinhua] 

An "injured person" is carried out from the Millennium Seoul Hilton Hotel while taking part in the anti-terror exercises simulating a chemical weapons attack in Seoul, South Korea, on Oct. 20, 2010. The drills came ahead of the G20 summit to be held in South Korea on Nov. 11-12.[Xinhua]