Jung Yeon-Je / AFP - Getty Images
US soldiers wear chemical warfare equipment during a joint military exercise with South Korea at a US Army base in Dongducheon, north of Seoul, South Korea, on Thursday, Mar. 3. The drill aimed to simulate the detection and disposal of North Korea's chemical, biological, radiological and nuclear weapons. US and South Korean soldiers displayed their techniques for handling weapons of mass destruction (WMD) in the face of North Korea's nuclear sabre-rattling.