Airman 1st Class Brittney Knowling operates a copy machine at the base finance office here June 17 to create digital and paper duplicates of checks received from the base Education and Training Center. The finance office keeps accurate records of all base funds and files receipts for a period of six years and three months. Airman Knowling is a customer service technician with the 437th Comptroller Squadron. (U.S. Air Force photo/Staff Sgt. Daniel Bowles)