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Lt. Col. Adam Quick, left, director of the Arnold Engineering Development Complex (AEDC) Space and Missile Branch, briefs Vice Chief of Staff of the Air Force Gen. Stephen Wilson as they walk through part of the arc heater facility Aug. 11, 2020, at Arnold Air Force Base, Tenn. Arc heaters allow for the testing of thermal protection systems in simulated environments representative of hypersonic flight. (U.S. Air Force photo by Jill Pickett)
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