Airman 1st Class John Williams, 436th Aircraft Maintenance Squadron crew chief, performs maintenance on a C-5 Galaxy engine as Staff Sgt. Scott Wilson gives him step-by-step instructions per the associated technical order. The Logistics Standardization and Evaluation Program inspection team has established grading criteria - much like a report card, to ensure maintainers live up to the standards in accordance to Air Force Instructions and technical orders to do the job safely and by the book. (U.S. Air Force photo/Jason Minto)
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