Wesley Dietrich, 9th Maintenance Operation Squadron aircraft mechanic, tightens a nut and bolt on a T-38 Talon at Beale Air Force Base, California, Jan. 27, 2020. The maintenance was part of an air speed test, which is a measurement of the aircraft’s speed relative to the air around it. (U.S. Air Force photo by Senior Airman Valentina Viglianco)
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