<p>Fire officials found three separate “points of origin,†all near the intersection of Silverado Canyon Road and Santiago Canyon Road. Two were on one side of the road, and the third was on the other. “Whoever did this knew what they were doing,” said Kris Concepcion, a fire authority battalion chief. Also, the fire traveled 3 miles in its first 20 minutes when it was ignited about 6 p.m. Sunday, he said.</p>