Reservists wearing special protective suits practice detecting nuclear-tainted sources during a demonstration ceremony in Shenzhen city, South China's Guangdong province, to mark the establishment of the nuclear, chemical and biological emergency response and rescue teams on May 3, 2012. The emergency response and rescue teams were formally founded in the provincial anti-chemical reservists and corps stationed in Shenzhen.[Photo/CFP]

Anti-chemical reservists practice nuclear cleanup work on vehicles during a demonstration ceremony in Shenzhen city, South China's Guangdong province, to mark the establishment of the nuclear, chemical and biological emergency response and rescue teams on May 3, 2012. [Photo/CFP]