Airman Kyle Jensen, 362nd Training Squadron crew chief apprentice student, reads through the technical order manual as Airman 1st Class Cory Ramsey adjusts the roll trim on the A7 flight control trainer with at Sheppard Air Force Base, Texas, Dec. 1. The roll trim is used to make minor adjustments during flight to compensate for weight balance. (U.S. Air Force photo by Alan R. Quevy)