Crews battle flames in Napa County

NOW IN NAPA COUNTY. RIGHT NOW, CREWS ARE WORKING TO STOP A BRUSH FIRE. Thanks for joining us at 4 p.m. My name is LISA GONZALEZ and my name is TY STEELE. Firefighters say buildings are at risk from this. THE FIRE IS BURNING ABOUT EIGHT MILES OUTSIDE OF ST. HELENA. IT BURST JUST BEFORE 2 P.M. THIS AFTERNOON IN DRY GRASS NEAR CRYSTAL SPRINGS ROAD. And you'll be able to see the smoke it gives off once we take the video here. There are planes and helicopters on this one right now. Drops of water, drops of retardant, to try to contain these flames because, obviously, there are also teams on the ground. WE SAW THE FIRE NEAR AT LEAST ONE HOUSE. You can see these retardant lines at the edge of the burn scar. Charred grass and brush all around this house. CAL FIRE SAYS THE FIRE HAS BURNED AT LEAST 57 ACRES. So we zoom in on this house where we see that the firefighters are desperately trying to save it. BIG GIANT HOUSE THERE, RIG