Wesley Dietrich, 9th Maintenance Operation Squadron aircraft mechanic, plugs a cable into a pressure-temperature test device during a T-38 Talon maintenance at Beale Air Force Base, California, Jan. 27, 2020. This device tests the aircraft’s airspeed, 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)