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Cmdr. Dan Shanower, 40, a U.S. Navy intelligence officer who grew up in Naperville, was believed to be among those working at the Pentagon when a plane struck.

Shanower's family has lived in Naperville for years, and Dan Shanower's father, Don, is a former North Central College professor, family friend Dick Eastman said.

A Naperville Central High School graduate, Shanower served "all over the globe," said Eastman. He also wrote essays for the U.S. Naval Institute magazine Proceedings, including one in 1997, called "Freedom Isn't Free."

Profile courtesy of THE CHICAGO TRIBUNE.