It took one week-but the Numbers Fire near Gardnerville is 100 percent contained. The fire scorched more than 18,000 acres and consumed 45 structures, including three homes. Investigators believe the fire was sparked by a semi-truck that experienced a failure in its exhaust system, igniting brush along U.S. 395. That said, they’re still looking for anyone who was on Highway 395 near Ridge View in the early evening hours of July 6th.