Northrop A9 in flight, backward view from the left side. Aircraft has a "II367" characters written on the left side of it's fuselage at the tail.
U.S. Dept. of Defense employee
<a rel="nofollow" class="external text" href="https://babel.hathitrust.org/cgi/imgsrv/download/pdf?id=uiug.30112106757344;orient=0;size=100;seq=96;attachment=0"><i>Military Review</i></a>, December 1972, Vol. 52, No. 12, Page 94