A 25-year-old firefighter from South Carolina has died after part of a burning apartment building collapsed while firefighters were inside. Authorities said James Muller of the Irmo Fire District died Friday while he was providing aid during the response to a fire at an apartment building in Columbia. WLTX-TV reports that Muller was one of seven firefighters who were taken to the hospital after the collapse. Columbia-Richland Fire Chief Aubrey Jenkins said the fire happened at Tropical Ridge apartments.