Damage to Substation on 1010 (Ten-Ten) Dock, Pearl Harbor Navy Yard. Ship at left is USS Helena (CL-50). Note Marine sentry at left, by Helena's gangway, armed with a .45 caliber pistol and rifle. The original photograph was in Enclosure (B) to 14th Naval District report, serial 01451 of 24 December 1941. Official U.S. Navy Photograph, from the collections of the Naval History and Heritage Command.