Image of Submarine Warfare insignia used in the US Navy. Note: For use in USN articles concerning awards.
<a href="https://en.wikipedia.org/wiki/User:Jigen_III" class="extiw" title="en:User:Jigen III">Jigen III</a>
<a rel="nofollow" class="external free" href="http://www.mediacen.navy.mil/pubs/allhands/jan01/warfarepins.htm">http://www.mediacen.navy.mil/pubs/allhands/jan01/warfarepins.htm</a>