mark barger has a look back now at his impressive career. >> tom clancy's goal had been simply to write one book. but he wrote more than 20. his high-tech cold war thrillers sold more than 100,000 copies and made him among the most popular authors of his time. >> people write about people who believe in something. people with a sense of duty, with a sense of mission, who will make the world better in some way. >> reporter: his success started in 1984 with "the hunt for red october." later turned into a movie, it was the first of several books featuring cia hero jack ryan. >> i got information from those interviews. none of it is classified. it's all in the open. really a matter of doing good research as a reporter does good research. >> reporter: it fascinated readers. the pre9/11 thriller dead of honor included a jumbo jet crashing into the u.s. capitol. films based on the novels became box office hits. even video games took inspiration from the high stake story lines of clancy's work. >> i write books. i tell stories. i try to keep them current. >> clancy's newest book, "command autho