Senior Airman Irvin Vazquez-Casanova, 28th Aircraft Maintenance Squadron combat oriented supply organization technician, reviews part numbers while performing an inspection at Ellsworth Air Force Base, S.D., Oct. 25, 2012. Each part number must be checked and verified in the parts database to ensure accurate accountability. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)