393d Bombardment Squadron emblem
<a href="https://en.wikipedia.org/wiki/United_States_Army_Institute_of_Heraldry" class="extiw" title="en:United States Army Institute of Heraldry">en:United States Army Institute of Heraldry</a>
<a rel="nofollow" class="external free" href="http://www.jbmilart.com/air-force-patches.html">http://www.jbmilart.com/air-force-patches.html</a> edited with Microsoft Paint per <cite class="book" style="font-style:normal" id="Reference-Watkins-2013">Watkins, Robert A. (2013)      <i> Insignia and Aircraft Markings of the U.S. Army Air Force In World War II</i>, Volume V, Pacific Theater of Operations, Atglen,PA:  Shiffer Publishing, Ltd.  <small><a href="https://en.wikipedia.org/wiki/International_Standard_Book_Number" class="extiw" title="en:International Standard Book Number">ISBN</a>:  <a href="//commons.wikimedia.org/wiki/Special:BookSources/978-0-7643-4346-9" title="Special:BookSources/978-0-7643-4346-9">978-0-7643-4346-9</a>. </small></cite>