<a href="https://en.wikipedia.org/wiki/Strategic_Defense_Initiative" class="extiw" title="w:Strategic Defense Initiative">Strategic Defense Initiative</a> logo (MDA is the Successor of SDI).
Missile Defense Agency, USA (www.mda.mil),<br><small>first uploaded by <a href="https://de.wikipedia.org/wiki/Benutzer:Wikifreund" class="extiw" title="de:Benutzer:Wikifreund">Wikifreund</a>, Germany</small>
<p>Own work  using: <a rel="nofollow" class="external text" href="http://www.mda.mil/global/documents/pdf/first60.pdf">Missile Defense: The first sixty years</a>, Approved for Public Release
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08-MDA-3756 (15 August 2008)