LT. JOHN WILLIAMSON, 46, of Warwick, N.Y., a New York fire department battalion commander, was passionate about life and dedicated to his job. "There is no greater love than this to lay down one's life for one's friends," said his brother, Dan. Williamson's teen-age daughter, Jessica, said her father had a smile that could light up a room. "He was never fake to anyone," she said. "My dad believed 110 percent in everything he did. I will always be my daddy's little girl."