Biden says 'I screwed up' but vows to stay in the race; Firefighters battle massive California wildfire amid blistering heat; Deadly Hurricane Beryl heading for Mexico and possibly the U.S.; and more on tonight's broadcast.

President Biden defiant after debate fallout as Democrats discuss next steps; Coastal Texas braces for Beryl's impact; California battles massive fire as nation faces dangerous heat wave; and more on tonight's broadcast.