An unarmed <a href="https://en.wikipedia.org/wiki/United_States_Air_Force" id="mwAQs" rel="mw:WikiLink" title="United States Air Force">United States Air Force</a> <a class="mw-redirect" href="https://en.wikipedia.org/wiki/T-39_Sabreliner" id="mwAQw" rel="mw:WikiLink" title="T-39 Sabreliner">T-39 Sabreliner</a> on a training mission is <a href="https://en.wikipedia.org/wiki/1964_T-39_shootdown_incident" id="mwAQ0" rel="mw:WikiLink" title="1964 T-39 shootdown incident">shot down</a> over <a href="https://en.wikipedia.org/wiki/Erfurt" id="mwAQ4" rel="mw:WikiLink" title="Erfurt">Erfurt</a>, <a href="https://en.wikipedia.org/wiki/East_Germany" id="mwAQ8" rel="mw:WikiLink" title="East Germany">East Germany</a>, by a <a href="https://en.wikipedia.org/wiki/Soviet_Air_Forces" id="mwARA" rel="mw:WikiLink" title="Soviet Air Forces">Soviet</a> <a class="mw-redirect" href="https://en.wikipedia.org/wiki/MiG-19" id="mwARE" rel="mw:WikiLink" title="MiG-19">MiG-19</a>.