Brasilia firefighters Rosangela Silva (C), Beatriz Simoes (I) and an unidentified colleague fight a fire 28 September at the Brasilia National Park. Officials at the park estimate that some 45 percent of the park's 30,000 hectares (74,100 acres) have been consumed by the fire, the origin of which is under investigation. (ELECTRONIC IMAGE) AFP PHOTO Antonio SCORZA