A U.S. Navy Lockheed P-3B-65-LO <i>Orion</i> (BuNo 152727) of Patrol Squadron 31 (VP-31) "Black Lightnings" in flight over a submarine, cira 1980.
U.S. Navy
<a rel="nofollow" class="external text" href="http://www.navy.mil/ah_online/department_arch.html">U.S. Navy All Hands magazine</a> <a rel="nofollow" class="external text" href="http://www.navy.mil/ah_online/archpdf/ah198102.pdf">February 1981</a>, p. 15.