U.S., South Korea Launch Air Force Drills

A joint U.S.-South Korean military exercise called Vigilant Ace kicked off at eight military installations on December 4. A video distributed by the South Korean Air Force shows F-15C and F-22 Raptor fighter jets taking off from South Korea's Gwangju Air Base. The exercise is scheduled to continue until December 8. The drills were launched a week after North Korea announced it had tested its most advanced intercontinental ballistic missile ever. (South Korean Air Force video via Reuters)