Silent and unseen, they glide beneath the surface of the sea-and change the tides of war. From the earliest submarines and U-boats to the latest nuclear-powered marvels, they are a perfect merging of new technology and timeless war tactics. Now today's top masters of military fiction give readers a periscope view of submarines-and the men who dare to man them in times of war... Includes stories by: James H. Cobb Jim DeFelice Brendan DuBois R.J. Pineiro William H. Keith, Jr. John Helfers Tom Geraghty Jean Rabe