"He was a regular presence at Oriole Park and enjoyed talking about baseball, the ballclub and its operations. We are deeply saddened by Tom's passing. He will be missed and long remembered," Mr. Angelos said.
Mr. Clancy's tough-guy and often-prickly, sarcastic countenance turned to mush when the subject was Kyle, a boy from Long Island who shared Mr. Clancy's fascination with fighting men and their weaponry. In 1990, Kyle, then 6 and battling cancer, wrote a fan letter to the author.
He responded first with a squadron of surplus airplane posters. Then, as Kyle's condition deteriorated, Mr. Clancy leaned on friends at the Pentagon to arrange visits for Kyle on warships and planes.
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As Kyle neared death, Mr. Clancy served as tour guide for a visit to Disney World and went on to found the Kyle Foundation to help similarly ill children.
For all of his celebrity, Mr. Clancy kept a rather low profile in Baltimore, preferring to quietly dine at Aldo's in Little Italy or send a driver for takeout, said Sergio Vitale, the restaurant's proprietor.
No information about services was available Wednesday.
Mr. Clancy is survived by his wife of 14 years, the former Alexandra Marie Llewellyn, a freelance television reporter; a son, Thomas L. Clancy III of Chicago; four daughters, Michelle E. Bandy of Virginia Beach, Va., Christine C. Blocksidge of Prince Frederick, Kathleen W. Clancy of Jupiter, Fla., and Alexis Jacqueline Page Clancy of Baltimore; and four grandchildren.
Clancy novels turned into movies
"The Hunt for Red October" was Tom Clancy's first novel, released in 1984. It became the first of five movies starring hero Jack Ryan. The movie, in theaters in 1990, starred Sean Connery and Alec Baldwin as Jack Ryan.
Harrison Ford took over the role of Jack Ryan for two movies: "Patriot Games" in 1992 and "Clear and Present Danger" in 1994. The books came out in 1987 and 1989, respectively.
"The Sum of All Fears" was published in 1991. In the 2002 movie starring Ben Affleck as Jack Ryan, Baltimore is partly destroyed by an atomic bomb (Denver was the target in the book).
Chris Pine will star as Jack Ryan in "Shadow One" scheduled for a Christmas release. It's the first Jack Ryan movie not based directly on a Clancy novel.
An earlier version of this obituary gave the incorrect first name for one of Mr. Clancy's daughters. The Baltimore Sun regrets the error.