Personnel from the 51st Maintenance Squadron conduct a mass casualty exercise near the flight line at Osan. U.S. Air Force personnel from the 51st Maintenance Squadron conduct a mass casualty exercise near the flight line at Osan Air Base, Korea, as part of Exercise Foal Eagle '99 on Oct. 27, 1999. Exercise Foal Eagle '99 is the 38th in a series of regularly scheduled rear area defense field training exercises. The annual exercise is held at a variety of locations throughout the Korean peninsula and involves some 30,000 U.S. military forces. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 252459-A-HNP74-263.jpg Photo Gallery