caption: U.S. Air Force <PERSON> <PERSON>, 909th Aircraft Maintenance Unit instrument and flight control systems journeyman, turns on a TTU-205J test set to perform pitot-static tests for the KC-135R March 15, 2017, at Kadena Air Base, Japan. Pito-static tests allows maintainers to simulate diagnostic readings for jets in the air on the ground. (U.S. Air Force photo by Senior Airman <PERSON>)
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