W7VOA Reporters on Yeonpyeong hearing booms from outgoing artillery. #DPRK has vowed a punishing response.
W7VOA #ROK military now confirming artillery drill underway. Expected to last up to 2 hrs. #Koreas
W7VOA #ROK believed to be firing K-9 self-propelled howitzers, 105mm towed artillery guns, Vulcan guns and 81mm mortars. #Koreas
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