Close-up of a hand on the trigger of an M-16A1 rifle. An Exercise Foal Eagle 2000 badge is visible in the background. Exercise Foal Eagle is held annually in South Korea to demonstrate US and South Korean military cooperation and is the US Militarys largest Joint-Service, Multi-National field training drill. This years drill involves about 25,000 active duty, Reserve, and National Guard troops from the United States and bases throughout the Pacific Command