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PMEL calibrates Kadena
Senior Airman Austin Jackson, a precision measurement equipment laboratory technician from the 18th Component Maintenance Squadron, calibrates a TTU-205J test set at Kadena Air Base, Japan, April 29, 2021. The TTU-205J is used to test, troubleshoot and calibrate aircraft systems by simulating in-flight pressure conditions. It provides a known altitude and airspeed to the aircraft and tests the system's response to ensure accuracy, and in order to do so, the TTU-205J itself must be accurate. (U.S. Air Force photo by Airman 1st Class Anna Nolte)

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Photo by: Airman 1st Class Anna Nolte |  VIRIN: 210429-F-ZJ963-1110.JPG