Koreas test borders

North and South Korean militaries exchanged fire three times in October. In the first incident, ships from both countries fired warning shots after a North Korean vessel crossed a disputed maritime border. 

On Oct. 10, North Korean soldiers fired at helium balloons carrying propaganda being sent across the border by South Korean activists. 

On Oct. 19, South Korean soldiers fired at North Korean soldiers encroaching on the demilitarized zone, prompting the North Korean soldiers to return fire. 

No casualties were reported during any of the events.