A U.S. Army Air Force Douglas A-20G-20-DO "No. 57" (S/N 42-86657) in flight.
USAAF
Unknown date<div style="display: none;">Unknown date</div>
Official U.S. Air Force photo 051118-F-1234P-041 from the USAF Museum website <a rel="nofollow" class="external autonumber" href="http://www.nationalmuseum.af.mil/shared/media/photodb/photos/051118-F-1234P-041.jpg">[1]</a>