31.   Firefighters and support personnel were using bulldozers to help clear a line around the fire while air tankers prepared to drop fire retardant.

32.   Firefighters were hampered somewhat by smoke, which prevented air tankers from being able to drop fire retardant.

33.   Five air tankers and six helicopters were brought in to fight the blaze.

34.   Firefighters battled the blaze on Wednesday and Thursday with air tankers, helicopters and bulldozers.

35.   Five air tankers blitzed the flames with fire retardant.

36.   Four air tankers dropped fire retardant on the blaze.

37.   Helicopters and air tankers were expected to resume air drops Thursday.

38.   In northern California, two air tankers collided Monday while fighting a fire in Mendocino County, officials said.

39.   In northern California, two air tankers collided while fighting a fire in Mendocino County, officials said.

40.   Instead, five air tankers were attacking the flames from the sky.