55th Civil Engineer 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>
2017-03-06
<a rel="nofollow" class="external free" href="http://ww.offutt.af.mil/organizations/55Sptg/CES/Default.htm">http://ww.offutt.af.mil/organizations/55Sptg/CES/Default.htm</a>