The President of the United States of America takes pleasure in presenting the Navy and Marine Corps Medal to Machinist First Class Kenneth F. Tinsley, United States Navy, for heroic conduct and endurance during the re-floating of a U.S. Warship. Chief Shipfitter Jack F. Martin and Machinist First Class Kenneth F. Tinsley, despite gales, sub-freezing temperatures, snow and the threat of air attack, made repeated underwater dives, when other divers were unable to stand the extreme cold. In one day the two men remained submerged for periods totaling nine hours in a water temperature of thirty-six degrees.