428-GX-K-33601:  Swimmers in inflated rubber boat begin the work of fixing a flotation collar on an Apollo mock-up spacecraft with the CH-53 Sea Stallion flying overhead.  The CH-53 is being evaluated recovery helicopter.  The downward air blast is being tested at this point to determine what effect it will have on the swimmers in their work on the spacecraft.  Photographed by PHC Wise, September 22, 1966. Photographed from small reference card.  U.S. Navy Photograph, now in the collections of the National Archives.  (2016/03/15).
U.S. Navy/Photographer's Mate Chief Petty Officer Wise
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/127906254@N06/25700704152/">428-GX-K-33601</a>