Florida ? Firefighters were making progress on containing a wildfire that has charred 390 square miles along the Georgia-Florida border, even though the blaze jumped a containment line, authorities said Tuesday.

Flames roared 50 feet into the air as helicopters and air tankers dropped water and fire retardant three times to help cool the inferno.

“We do believe we have the resources in place to control the fire,” said Jim Caldwell, a U.S. Forest Service spokesman.

The flames jumped containment lines three times Monday as brisk winds, low humidity and high temperatures made work difficult for an army of firefighters. But on each occasion, firefighters were able to quickly extinguish the blazes. There were no reports during the day Tuesday of fires jumping containment lines.

The fire was raging through the Osceola National Forest and heading toward Lake City.

Harvey Campbell, a spokesman for Columbia County, said 725 homes had been evacuated.