The first U.S. Navy Lockheed XFV-1 (BuNo 138657) in flight at Edwards Air Force Base, California (USA).
USAF
circa 1954-1955
scan from Robert L. Lawson (ed.): <i>The History of US Naval Air Power.</i> The Military Press, New York (USA), 1985. <a href="//commons.wikimedia.org/wiki/Special:BookSources/0-517-414813" title="Special:BookSources/0-517-414813">ISBN 0-517-414813</a>, p. 127. USAF cited as source.