Insignia of the U.S. Navy Commander, Task Force 60 (CTF 60), United States Sixth Fleet, in 1977.
U.S. Navy
U.S. Navy photo <a rel="nofollow" class="external autonumber" href="https://www.navysite.de/cruisebooks/cvn68-78/006.htm">[1]</a> from the <a rel="nofollow" class="external text" href="https://www.navysite.de/cruisebooks/cvn68-78/index_002.htm">USS <i>Nimitz</i> (CVN-68) 1977-1978 cruise book</a> available at <a rel="nofollow" class="external text" href="http://navysite.de/cruisebooks/index.html">Navysite.de</a>