A U.S. Navy Lockheed SP-2H <i>Neptune</i> (BuNo 135596, named "Pegasus") of Patrol Squadron 11 (VP-11) in flight over Mount Etna, Italy, circa 1965.
U.S. Department of Defense
<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/ah196507.pdf">July 1965</a>, p. 37.