Lot-9435-5:  Anti-Aircraft Guns Guard New York City, New York.  From roofs of skyscrapers and from hidden nests in parks, anti-aircraft guns poke their barrels skyward in New York City these days to provide a deadly reception for invading planes.  Here is one of the larger guns in position with the crew demonstrating the first steps to be taken when they are called into action.  Office of War Information Collection, Dec 1941-Jan 1942.  (2015/12/11).
<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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