A U.S. Air Force crew chief directs the pilot of an F-16 Fighting Falcon. A U.S. Air Force crew chief directs the pilot of an F-16 Fighting Falcon aircraft at Shaw Air Force Base, S.C., during Operation Iron Thunder on Feb. 7, 2007. The operation is a multi-service, multi-national large force exercise with more than 100 aircraft participating. SHARE: Download: Full Size (0.02 MB) Credit: VIRIN: 331174-S-ULB70-557.jpg Photo Gallery