South Korean students riding bicycles pass by army soldiers on Unification Bridge in Paju, South Korea, near the border village of Panmunjom, Sunday, May 19, 2013. The South Korean military on Sunday ... more 
South Korean students riding bicycles pass by army soldiers on Unification Bridge in Paju, South Korea, near the border village of Panmunjom, Sunday, May 19, 2013. The South Korean military on Sunday have beefed up monitoring on North Korea and are maintaining a high-level of readiness to deal with any risky developments to guard against possibilities of additional missile launches and other types of provocations. (AP Photo/Ahn Young-joon) less 
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Associated Press | Photo By Ahn Young-joon
Sun, May 19, 2013 6:32 AM EDT