Senior Airman Kasey Weidman, 4th Component Maintenance Squadron test, measurement and diagnostic equipment technician, prepares to calibrate a caliper using gage blocks, Nov. 18, 2015, at Seymour Johnson Air Force Base, North Carolina. The precision measurement equipment lab handles anywhere from 20 to 60 items on a daily basis. (U.S. Air Force photo/Airman Shawna L. Keyes)