Senior Airman Benjamin Goldsmith, 517th Aircraft Maintenance Unit, replaces an oil filter on a C-17 Globemaster III July 20. This C-17 was being prepared for the Air Mobility Command Rodeo, a biannual Olympic-style competition which involves mobility aircraft with air crew, maintainers, aeromedical evacuation personal, aerial port and security forces personnel competing in their respective core skills. The event is scheduled to start July 23 and run until July 29.