DANIEL F. LIBRETTI, 43, of New York, a firefighter for the New York Fire Department, graduated from the New York Restaurant School in the mid-1990s and had a side job as an assistant pastry chef at a French restaurant in Manhattan. Fellow firefighters knew firsthand about his cooking skills. “He cooked us meals we couldn't afford on the outside. We couldn't even name them,” said Peter Romeo, who wasn't on duty Sept. 11. Libretti also worked as a private contractor and was building a pond in his home's back yard. “The joke is, ‘I wonder what career he's up to in heaven?’” said his wife, Dolores.