Submarines and their Highly Trained Crew

Submarines and their highly trained crew engage in mine warfare, perform Intelligence, Surveillance and Reconnaissance (ISR) missions, and support battle group operations. Out of every 20 men sighing up for duty, maybe six would quantify. To learn more read "Mentality in Submarines" that explains what it takes to serve in this special branch, of the U.S. Navy in "Heroes Beneath the Waves: Submarine Stories of the Twentieth Century", by Mary Nida Smith, who's husband spent sixteen years as Chief Sonarman in three wars.