4th Troop Carrier Squadron emblem as used by 4th Air Transport Squadron, 4th Military Airlift Squadron and 4th Airlift Squadron
<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.afhra.af.mil/About-Us/Fact-Sheets/Display/Article/433574/4-airlift-squadron-amc/">https://www.afhra.af.mil/About-Us/Fact-Sheets/Display/Article/433574/4-airlift-squadron-amc/</a>