 A wildfire in Northern California has burned over 3,000 acres and is threatening a town amidst a heat wave roasting the American West. In Butte County, a state of emergency is now in place. Over 13,000 people are evacuated as flames burn near the town of Oroville. Four firefighters have been injured battling the flames in extreme heat. It's a wind-driven wildfire which continues to threaten Lake Oroville Dam. Water and power infrastructure is under threat. ABC's Alex Stone.