This image was acquired from
wikimedia. 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:
U.S. Navy Basic Crewman Training candidates tread water in pool while waiting for instructions during their first physical screening test at Naval Amphibious Base Coronado Calif. May NYS. en Navy Basic Crewman Training candidates tread water in pool while waiting for instructions during their first physical screening test at Naval