WEED, Calif. (AP) — Thousands of people are under evacuation orders in Northern California as a wind-whipped wildfire rages near rural communities. Authorities say the Mill Fire that began Friday afternoon has injured at least two people and burned an unknown number of homes in the area of Weed, an hour’s drive from the Oregon state line. It’s one of three large fires that forced large-scale evacuations in recent days as California swelters under a heat wave that’s expected to last through Labor Day. People trying to cool down are threatening to strain California’s electrical grid. Hoping to avoid blackouts, the state has issued a call for energy conservation for Saturday afternoon and evening.