The U.S. Navy aerial demonstration team "Blue Angels" Douglas A-4F <i>Skyhawk</i>s fly past Mount Rushmore National Memorial, South Dakota (USA), in 1976.
U.S. Navy
1976
Official U.S. Navy photo <a rel="nofollow" class="external autonumber" href="http://usnhistory.navylive.dodlive.mil/files/2016/04/1976-04.jpg">[1]</a> from the U.S. Navy <a rel="nofollow" class="external text" href="http://www.history.navy.mil">Naval History and Heritage Command</a>