AUAB PMEL, calibrating the AOR
Senior Airman Jonathan Chong (left), 379th Expeditionary Maintenance Squadron physical and dimensional technician, trains Senior Airman Marc Rosales (right), 379th EMXS physical and dimensional technician, how to detect contaminations in an oxygen pressure guage on oxygen test measurement diagnostic equipment July 30, 2021, at Al Udeid Air Base, Qatar. Chong and Rosales are part of the calibration section, which is the sole regional repair network node for Air Forces Central, supporting every base in the area of responsibility. (U.S. Air Force photo by Airman 1st Class Kylie Barrow)