The <a href="https://en.wikipedia.org/wiki/United_States_Air_Force" id="mwAWE" rel="mw:WikiLink" title="United States Air Force">United States Air Force</a>'s robotic <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Boeing_X-37B" id="mwAWI" rel="mw:WikiLink" title="Boeing X-37B">Boeing X-37B</a> <a href="https://en.wikipedia.org/wiki/Spaceplane" id="mwAWM" rel="mw:WikiLink" title="Spaceplane">spaceplane</a> returns to Earth after a <a class="mw-redirect" href="https://en.wikipedia.org/wiki/USA-226" id="mwAWQ" rel="mw:WikiLink" title="USA-226">classified 469-day orbital mission</a>.<sup about="#mwt75" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-13"}}' id="cite_ref-13" rel="dc:references" typeof="mw:Extension/ref"><a href="./June_16#cite_note-13" id="mwAWU" style="counter-reset: mw-Ref 13;"><span class="mw-reflink-text" id="mwAWY">[13]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-13"><cite about="#mwt72" class="citation web cs1" id="CITEREFWall2012">Wall, Mike (June 17, 2012). <a class="external text" href="https://www.space.com/16173-secret-x37b-space-plane-landing-video.html" id="mwBzc" rel="mw:ExtLink nofollow">"Air Force Video Reveals Secret X-37B Space Plane's Robotic Landing"</a>. <i id="mwBzg">Space.com</i><span class="reference-accessdate" id="mwBzk">. Retrieved <span class="nowrap" id="mwBzo">June 16,</span> 2020</span>.</cite><span about="#mwt72" class="Z3988" id="mwBzs" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=Space.com&amp;rft.atitle=Air+Force+Video+Reveals+Secret+X-37B+Space+Plane%27s+Robotic+Landing&amp;rft.date=2012-06-17&amp;rft.aulast=Wall&amp;rft.aufirst=Mike&amp;rft_id=https%3A%2F%2Fwww.space.com%2F16173-secret-x37b-space-plane-landing-video.html&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AJune+16"></span></span>