71st Air Commando Squadron emblem.  Based on 71st Troop Carrier Squadron emblem with all elements within disc and slightly modified.
<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="https://www.norbay.com/product/71st-special-operations-squadron-decal">https://www.norbay.com/product/71st-special-operations-squadron-decal</a> edited with Microsoft Paint