The No. 2 and No. 3 Mark 7 16-inch/50-caliber gun turrets of the battleship USS IOWA (BB 61) are fired to starboard during a main battery gunnery exercise, 1987. Official U.S. Navy Photograph, now in the collections of the National Archives in the Online Public Access. <a rel="nofollow" class="external text" href="https://www.flickr.com/people/127906254@N06">National Museum of the U.S. Navy</a>
Chief Photographer's Mate Jeff Hilton
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/127906254@N06/17055183318/">DN-ST-87-05940</a>