Japan conducted a tsunami drill on its westernmost island on Sunday. 200 military and island officials took part in the drill to practice not only for a natural disaster, but an evacuation in the event of a Chinese invasion of Taiwan.

Japan is prone to tsunamis triggered by earthquakes but with rising tension in the Pacific there will also need to be an evacuation plan for the civilians on Japan’s islands in case of a Chinese offensive. Koji Sugama is an island official in charge of preparing residents and believes these drills will help prepare the community for an attack if one were to come.