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Nathan Payne, Flight Systems Test Branch, Test Division propulsion subject matter expert and Josh Webb, Analysis Flight commander, Flight Systems Test Branch, watch data as it is collected during a test run in the 16-foot supersonic wind tunnel, or 16S, to calibrate a mass flow assembly, Nov. 19, 2020, at Arnold Air Force Base, Tenn. Calibration of large-scale MFAs is a new capability in 16S. (U.S. Air Force photo by Jill Pickett)
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