4477th Test and Evaluation Squadron - MiG-23 Throttle
United States Air Force
1980a
Photo scanned from "Red Eagles: America's Secret MiGs", <a href="//commons.wikimedia.org/wiki/Special:BookSources/1846033780" title="Special:BookSources/1846033780">ISBN 1846033780</a>. Photo in book is credited to the United States Air Force