An out-of-control wildfire in the foothills of a national forest east of Los Angeles threatened ten of thousands of buildings and forced hundreds of residents to flee Sunday amid a days-long heat wave of triple-digit temperatures.

Tens of thousands of homes and buildings were threatened Sunday by an out-of-control wildfire burning in the foothills of a national forest east of Los Angeles, amid a days-long heat wave that pushed temperatures into the triple digits across the region.