Norman Polmar is an analyst and consultant specializing in the naval, aviation, and intelligence fields. He has been an adviser on naval issues to three U.S. senators, the speaker of the House of Representatives, and three secretaries of the U.S. Navy, as well as to the leadership of Australian, Chinese, and Israeli navies. Polmar is the author or coauthor or more than fifty books, including Cold War Submarines: The Design and Construction of U.S. and Soviet Submarines, 1945–2001 with coauthor K. J. Moore (Potomac, 2005) and The Enola Gay: The B-29 That Dropped the Atomic Bomb on Hiroshima (Potomac, 2004). Lee J. Mathers was on active duty with the Navy from 1967 to 1978 as a surface warfare officer with an intelligence subspecialty. He made two deployments to Vietnam, including a one-year in-country tour. He is the coauthor with Norman Polmar of Opening the Great Depths: The Bathyscaph Trieste and Pioneers of Undersea Exploration.