ANGWIN, Calif. (KGO) -- When you're asleep, wildfire crews don't stop.
ABC7 heard reports from Napa County about worsening fire conditions, so the I-Team's Dan Noyes headed to Angwin after midnight and saw crews from CAL FIRE, San Diego and Los Angeles working to save homes.
The toughest terrain, searing heat and exhausted firefighters.
Watch the full story in the media player above.
App users: For a better experience, click here to view the full map in a new window
VIDEO: Photos show scope of Bay Area wildfires' devastation
RELATED STORIES & VIDEOS: