This guy was directing the big floating dredger in the background He looks like the coke light man to me.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/115785168@N08">PiConsti</a>
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/piconsti/17041360387/">Dockworker, San Francisco</a>