A U.S. Navy DSN-1 "DASH" (Drone Anti-Submarine Helicopter) in free flight over the flight deck of the destroyer USS <i>Hazelwood</i> (DD-531) on 22 March 1961. A Sikorsky HSS <i>Seabat</i> helicopter is visible in the background.
U.S. Navy
Official U.S. Navy photo <a rel="nofollow" class="external text" href="http://www.history.navy.mil/our-collections/photography/numerical-list-of-images/nhhc-series/nh-series/KN-01000/KN-1814.html">KN-1814</a> from the U.S. Navy <a rel="nofollow" class="external text" href="http://www.history.navy.mil">Naval History and Heritage Command</a>