South Korea kicked off live-fire military exercises on defending border islands against North Korean attack on Wednesday, warning residents to avoid going outside during the drills.

The exercises, led by the ROK Northwest Islands Defense Command, will run for three days through Friday and will involve multiple military branches, including the marines, navy and air operation commands and special operation command.

The “defensive” drills will include reinforcement training and amphibious landing scenarios, among preparations for “various contingencies,” according to the ROK marine corps on Tuesday.

“Through this exercise, our military will once again review our strong commitment to immediately, strongly