A volunteer firefighter died battling a wildfire in northern Florida while more than 120 homes have been destroyed in southeast Georgia and thousands more remain threatened by two large blazes, one of which investigators suspect was sparked by a foil balloon touching power lines,

The National Interagency Fire Center has announced that the fire has grown to 22,615 acres, bringing it to 6% contained.

A second fire about 70 miles (110 kilometers) to the southwest in Clinch and Echols counties, near the Florida state line, had burned more than 46 square miles (121 square kilometers), destroyed at le...