The President of the United States of America takes pleasure in presenting the Navy and Marine Corps Medal to Lieutenant, Junior Grade Douglass L. Mann, Jr., United States Navy, for heroic conduct on the late morning of 5 February 1964 while serving at the U.S. Naval Amphibious School, Coronado, San Diego, California. Volunteering to assist in the rescue of two men who were trapped under an overturned LCVP in the surf at Yellow Beach, Lieutenant, Junior Grade, Mann executed four dives under the perilously shifting boat and succeeded in freeing both men and assisting them to safety. His professional skill, courage, and persevering efforts in the face of great personal risk were in keeping with the highest traditions of the United States Naval Service.