A fire in the Sierra Nevada mountain range has destroyed 1,000 homes, California fire officials said Saturday. At least two people have died in the fire, which is now 67 percent contained. Yet officials worry that upcoming high temperatures and winds may undo some of that work. “You’ve got some high temps, high winds that could stir up those ash piles and those ember piles,” a fire battalion chief said. “We have to do that mop-up to be sure this fire goes to bed.” A separate fire in Lake County has destroyed 600 homes and killed three people.