This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
blackandwhite monochrome people black and white LCDIGHEC Depth of feet reached by U.S. Navy Divers in recent test of HeliumOxygen for air supply. Record dives deep as feet have been recently made at the Washington Navy Yard and off USS Falcon submarine rescue off Portsmouth New Hampshire by divers using U.S. Navy standard