US and Allies Hold Missile Defense Drills in the Face of Nuclear Threat

A U.S. MH-60S Sea Hawk flies by Japan's Maritime Self-Defense Force ship JS Shimakaze above waters around Okinawa southwest of the Korean peninsula, Oct. 9, 2017. Japan, the United States, and South Korea launched a joint ballistic missile tracking drill on Oct. 24, 2017. U.S. Navy via REUTERS

The United States, Japan, and South Korea began a drill on Tuesday to help the allies coordinate their anti-missile defenses.

The exercise aims to help the three countries coordinate their efforts to detect and track a ballistic missile launch.