AT midnight on April 6, 2000, Guwahatis oil refinery presented a strange sight. Over 200 people, both young and old, formed a half-circle around the refinery and kept a nightlong vigil. Even more surprisingly, the police kept a discreet distance, the people just seemed to have taken over. And these vigilantes were ordinary people-bank clerks, small-time businessmen, government servants, even students, and members of the Noonmati Nagarik Committee (NC). What made them stand guard in the night was a common cause: the refinery, under threat from ULFA militants, had to be protected at all costs.