Hart Van Denburg/CPR News A crew at work repairing power lines south of Grand Lake on Tuesday, Oct. 27, 2020, that were damaged by the East Troublesome fire. On a summer evening in 2018, a set of tracer rounds from a shooting range ignited a fire near Basalt, Colo. Dry weather let the blaze grow into the Lake Christine Fire, which would burn more than 12,000 acres and destroy about half a dozen homes. It also burned three of four transmission lines running into Aspen. If the fourth had gone down, the city could have lost electricity for weeks, according to Holy Cross Energy, the local power supplier.