Two researchers review some data while standing in front of a 16-foot thermal vacuum chamber in the Payload Checkout Facility at the Naval Research Laboratory (NRL).  Inside the chamber is a gyrodynamics motion simulator used for large-scale fuel slosh tests.   U.S. Navy Photograph, now in the collections of the U.S. National Archives:  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>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/127906254@N06/17080640250/">DN-ST-91-01191</a>