Tech. Sgt. Anthony Tavares, 28th Logistics Readiness Squadron light ground vehicle noncommissioned in charge of special purpose vehicle maintenance, conducts a Pre-Maintenance Inspection checklist on a flightline snow broom, Sept. 8, 2023, at Ellsworth Air Force Base, South Dakota. A PMI checklist is a diagnostic tool that helps vehicle maintenance flights identify what parts or services need to be addressed on a ground vehicle. (U.S. Air Force photo by Airman 1st Class Dylan Maher)