SOUTH KOREA SORTIE A U.S. Air Force crew chief does a safety check on an A-10 Thunderbolt II aircraft before taking off for a sortie during a full spectrum threat response on Osan Air Base, South Korea, Sept. 27, 2006. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 549073-O-TRM86-026.jpg Photo Gallery