John F. Lehman, Jr. is an American investment banker and writer who served as Secretary of the Navy in the Reagan administration and since 2003 has been a member of the 9/11 Commission.
Lehman served in the Air Force Reserves for three years. In 1968 he left the Reserves and joined the United States Navy Reserve as an ensign, later rising to the rank of commander. He worked for UBS AG, then later was president of Abington Corporation, from 1977 to 1981, when he was appointed Secretary of the Navy. As the 65th Secretary, Lehman launched the idea of building a “600-ship Navy”. He developed a strategic concept to counter the threat of Soviet incursion into Western Europe known as the ?Lehman Doctrine?.
Lehman is chairman of the private equity investment firm J. F. Lehman and Company., he is a member of a number of influential conservative American think tanks, including the Heritage Foundation and the Committee on the Present Danger.