80-G-41728:  U.S. Navy Anti-Aircraft Training Center, Point Montara, California, gun crews learning to load and fire AA guns of the latest type at moving targets.  Firing 20 mm. gun.  Note the tracer.   Photographed June 3, 1943.  U.S. Navy Photograph, now in the collections of the National Archives.  (2016/05/10).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/127906254@N06">National Museum of the U.S. Navy</a>
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