YOUNGSTOWN AIR RESERVE STATION, Ohio -- U.S. Air Force Reserve Airmen from the 910th Maintenance Group perform isochronal inspections (ISO), assessments, of each aircraft that help keep the 910th Airlift Wing mission-ready. During an ISO, aircraft receive an oil change, engine check, run through the wash rack removing any debris from gear wells as well as a long list of maintenance checks. Released/U.S. Air Force photo by Mr. Eric White