Eric Wertheim is a defense consultant, columnist, and author specialising in naval and air force issues. A contributor to the Naval Institute's Proceedings magazine, he wrote a column on historic U.S. warships for ten years prior to taking over the monthly `Combat Fleets of the World' column in June 2004. He is the co-author with Norman Polmar of the books Chronology of the Cold War at Sea and Dictionary of Military Abbreviations.