Three U.S. Navy Sikorsky SH-3A <i>Sea King</i>s of Helicopter Anti-Submarine Squadron HS-4 "Black Knights" in flight over Key West, Florida (USA).
U.S. Navy
<a rel="nofollow" class="external text" href="http://collections.naval.aviation.museum/emuwebdoncoms/pages/doncoms/AdvQuery.php">U.S. Navy National Museum of Naval Aviation</a> photo No. <a rel="nofollow" class="external text" href="http://collections.naval.aviation.museum/emuwebdoncoms/pages/doncoms/Display.php?irn=58803&amp;QueryPage=%2Femuwebdoncoms%2Fpages%2Fdoncoms%2FAdvQuery.php">2011.003.323.010</a>