PMEL putting in work
U.S. Air Force Senior Airman Ethan Jones, 20th Component Maintenance Squadron, test measurement diagnostic equipment journeyman checks the frequency measurements at Shaw Air Force Base, S.C., Dec. 7, 2018. The precision measurement equipment laboratory has a multitude of sections that all Airmen must become proficient on. Once each section is learned Airmen tend to lean towards one skill or the other. (U.S. Air Force photo by Airman 1st Class BrieAnna Stillman)