GREENSBURG, Pa. (Tribune News Service) Julia Parsons knows how to keep a secret. She was tight-lipped about one for more than 50 years. Parsons, 99, of Forest Hills, was a code-breaker in World War II. She served in the U.S. Navy s WAVES (Women Accepted for Volunteer Emergency Service), after graduating from Carnegie Tech (now Carnegie Mellon) in 1942. Following cryptology training at the Naval Reserve Midshipmen s School, Parsons was sent to Washington to be a code-breaker. She worked on one of the first computers to decode German U-boat message traffic sent via the Enigma machine, according to Todd DePastino, founder and executive director of the Veterans Breakfast Club, a Pittsburgh nonprofit dedicated to sharing veterans stories.