South Korean Marine K-55 self-propelled howitzers are on positions during an exercise 

South Korean Marine K-55 self-propelled howitzers are on positions during an exercise against possible attacks by North Korea near the border village of Panmunjom in Paju, South Korea, Wednesday, April 3, 2013. (AP Photo/Ahn Young-joon)
Associated Press
South Korean Marine K-55 self-propelled howitzers are on positions during an exercise against possible attacks by North Korea near the border village of Panmunjom in Paju, South Korea, Wednesday, April 3, 2013. (AP Photo/Ahn Young-joon)
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