U.S. Air Force LT. COL. Brian Robinson, a Weapons Officer upgrade student from the 57th Weapons Squadron, pre-flights his C-17 Globemaster III aircraft before a mission during a Composite Force Operations (CFO) exercise at Biggs Army Air Field, Texas, on Nov. 18, 2004. The CFO phase of the U.S. Air Force Mobility Weapons School/ Weapons Instructor Courses employs a realistic scenario requiring the students to plan and execute airdrop, air land and air refueling operations in a dynamic, mature theater. (USAF PHOTO by STAFF SGT. Matthew Hannen) (Released)