On October 24, the United States, South Korea (ROK), and Japan began a joint missile early warning exercise. Although no missiles will be fired, the two-day joint exercise has mobilized four Aegis Combat System-equipped ships to practice detecting and tracking computer-simulated North Korean ballistic missiles. The USS Stethem (DDG 63) and the USS Milius (DDG 69) from the U.S. 7th and 3rd fleet respectively will be participating in the exercise. According to a U.S. 7th Fleet statement the exercise, “will allow participants to enhance tactical capabilities, increase self-defense, and strengthen partnerships and situational awareness.” This is the fifth joint missile warning drill with the three countries since June 2016.