Japan's policemen in protective gears investigate a container during a drill for the Proliferation Security Initiative Exercise (PSI), at a port in Yokohama, south of Tokyo, October 15, 2007. Japan, the U.S. , Australia, France, New Zealand and Singapore took part in the three-day naval drill to improve their capability to prevent possible transport of weapons of mass destruction by sea. Reuters Pictures 25 months ago

Japan's policemen in protective gears investigate a container during a drill for the Proliferation Security Initiative Exercise (PSI), at a port in Yokohama, south of Tokyo, October 15, 2007. Japan, the U.S. , Australia, France, New Zealand and Singapore took part in the three-day naval drill to improve their capability to prevent possible transport of weapons of mass destruction by sea.