U.S. Air Force Airman 1st Class Peter Lockett, 20th Equipment Maintenance Squadron metals technology technician, adjusts the settings on a lathe to shave down a piece of metal at Shaw Air Force Base, S.C., Jan. 30, 2018. Precision tolerances for items from the metals technology shop can range from zero to around the width of a piece of paper. (U.S. Air Force photo by Senior Airman Destinee Sweeney)