Lead: For 400 years service men and women have fought to carve out and defend freedom and the civilization we know as America. This series on A Moment in Time is presented by the people of General Dynamics and is devoted to the memory of those warriors, whose sacrifice gave, in the words of Lincoln at Gettysburg, the last full measure.

Intro.: A Moment in Time with Dan Roberts.

Content: With the arrival of electric and diesel propulsion, the necessary components for a successful submarine were in place. Two of the main inventive rivals in the early years were John Philip Holland and Simon Lake. Eventually, Holland won the competition as the U.S. Navy built its craft using his designs, but he had a worthy opponent in his rival on submarine construction, Simon Lake.

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