US, South Korean Warplanes Kick Off Joint Air Drills

The United States and South Korea began major air exercises on Monday, involving 130 warplanes from both countries to simulate 24-hour wartime operations.

The annual drills, called Vigilant Defense, will run until Friday, featuring variants of the F-35 stealth fighter from both the United States and South Korea, among other aircraft, South Korea's Air Force said, Reuters reported.

The drills are aimed at improving interoperability between the two militaries by performing major air missions such as air-to-surface live fire drills, defensive counter air operation and other emergency training.