Insignia of the U.S. Navy Observation Squadron 67 (VQ-4) "Ghost Squadron".
U.S. Navy
Official U.S. Navy badge <a rel="nofollow" class="external autonumber" href="http://www.military-graphics.com/VO-67.png">[1]</a>/<a rel="nofollow" class="external autonumber" href="http://www.vo-67.org/graphics/vo67_patch.gif">[2]</a> from the <a rel="nofollow" class="external text" href="http://www.vo-67.org/">VO-67 association website</a>