A firefighter battles the Caldor Fire along Highway 89, Tuesday, Aug. 31, 2021, near South Lake Tahoe, Calif. (AP Photo/Noah Berger)
Seen from South Lake Tahoe, Calif., flames from the Caldor Fire leap along a hillside above Christmas Valley on Monday, Aug. 30, 2021. (AP Photo/Noah Berger)
A chimney stands on a property destroyed by the Caldor Fire near South Lake Tahoe, Calif., Tuesday, Aug. 31, 2021. (AP Photo/Jae C. Hong)
A firefighter monitors the Caldor Fire burning near structures in South Lake Tahoe, Calif., Monday, Aug. 30, 2021. (AP Photo/Jae C. Hong)
Firefighters carry water hoses while battling the Caldor Fire near South Lake Tahoe, Calif., Tuesday, Aug. 31, 2021. (AP Photo/Jae C. Hong)
National Guardsmen staff a checkpoint in South Lake Tahoe, Calif., on Tuesday, Aug. 31, 2021, as the Caldor Fire approaches. (AP Photo/Noah Berger)
A tree flares up as firefighters continue to battle the Caldor Fire near South Lake Tahoe, Calif., Tuesday, Aug. 31, 2021. (AP Photo/Jae C. Hong)
With the Caldor Fire approaching, Dawn Svymbersky stands in the middle of Highway 50 as evacuee traffic stands still in South Lake Tahoe, Calif., on Monday, Aug. 30, 2021. ((AP Photo/Noah Berger))
With the Caldor Fire approaching, Jim Mrazek stands outside his vehicle on Highway 50 as evacuee traffic stands still in South Lake Tahoe, Calif., on Monday, Aug. 30, 2021. ((AP Photo/Noah Berger))
With the Caldor Fire approaching, traffic on Highway 50 stands still as South Lake Tahoe, Calif., as residents try to evacuate on Monday, Aug. 30, 2021. ((AP Photo/Noah Berger))
Vehicles idle in bumper-to-bumper traffic in South Lake Tahoe, Calif., Monday, Aug. 30, 2021. ((AP Photo/Sam Metz))
Seen from South Lake Tahoe, Calif., flames from the Caldor Fire consume a home on Monday, Aug. 30, 2021. ((AP Photo/Noah Berger))
Seen in a long camera exposure, the Caldor Fire burns as a chairlift sits motionless at Sierra-at-Tahoe ski resort on Sunday, Aug. 29, 2021, in Eldorado National Forest, Calif. (AP Photo/Noah Berger)
Seen in a long camera exposure, the Caldor Fire burns on Sunday, Aug. 29, 2021, in Eldorado National Forest, Calif. (AP Photo/Noah Berger)
Seen in a long camera exposure, a snowmaking machine blasts water as the Caldor Fire burns at Sierra-at-Tahoe ski resort on Monday, Aug. 30, 2021, in Eldorado National Forest, CA. (AP Photo/Noah Berger)
Seen in a long camera exposure, the Caldor Fire burns at the Sierra-at-Tahoe ski resort on Monday, Aug. 30, 2021, in Eldorado National Forest, Calif. (AP Photo/Noah Berger)
Seen in a long camera exposure, the Caldor Fire burns at the Sierra-at-Tahoe ski resort on Sunday, Aug. 29, 2021, in Eldorado National Forest, Calif. (AP Photo/Noah Berger)
Seen in a long camera exposure, the Caldor Fire burns as a chair lift sits at the Sierra-at-Tahoe ski resort on Sunday, Aug. 29, 2021, in Eldorado National Forest, Calif. (AP Photo/Noah Berger)
Seen in a long camera exposure, the Caldor Fire burns at the Sierra-at-Tahoe ski resort on Sunday, Aug. 29, 2021, in Eldorado National Forest, Calif. (AP Photo/Noah Berger)
Seen in a long camera exposure, the Caldor Fire burns at Sierra-at-Tahoe ski resort on Monday, Aug. 30, 2021, in Eldorado National Forest, Calif. (AP Photo/Noah Berger)
Seen in a long camera exposure, chimneys stand at residences leveled by the Caldor Fire along Highway 50 on Sunday, Aug. 29, 2021, in Eldorado National Forest, Calif. (AP Photo/Noah Berger)