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Thomas Leo Clancy Jr. (April 12, 1947 – October 1, 2013) was an American novelist best known for his technically detailed espionage and military-science storylines set during and after the Cold War. Seventeen of his novels were bestsellers, and more than 100 million copies of his books were sold. His name was also used on movie scripts written by ghostwriters, nonfiction books on military subjects occasionally with co-authors, and video games. He was a part-owner of his hometown Major League Baseball team, the Baltimore Orioles of the American League and vice-chairman of their community activities and public affairs committees.