355th Component Maintenance Squadron - Physical Dimensional Element
U.S. Air Force Senior Airman Steven Opida, 355th Component Maintenance Squadron Precision Measurement Equipment Laboratory Physical Dimensional Element technician, left, and Senior Airman Logan Bertin, 355th CMS PMEL Physical Dimensional Element technician, calibrate a toxic gas detector at Davis-Monthan Air Force Base, Arizona, June 2, 2025. Toxic gas detectors are used to monitor the presence of harmful gases and vapors and sound an alarm at dangerous levels. (U.S. Air Force photo by Senior Airman Devlin Bishop)