A helicopter from the emergency service releases water on a burning area in the district of Musi Banyuasin in Indonesia's South Sumatra province October 25, 2006. Forest fires have been raging for weeks, spreading smoke across much of Southeast Asia and triggering fears of a repeat of the environmental disaster in 1997-98 when dry conditions linked to the El Nino weather pattern caused a choking haze that cost the region billions of dollars in economic losses.