80-G-40318:  PQ 17 North Atlantic Convoy.  Shown is the convoy en route to Russia as it fights in the North Atlantic.  U.S. merchant vessel is hit by enemy aerial torpedo.  Anti-aircraft fire from the 20 mm. gun at right is visible, July 1942.  (2015/10/20).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/127906254@N06">National Museum of the U.S. Navy</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/127906254@N06/22346685102/">80-G-40318</a>