But Herry Purnomo, a scientist at the Indonesia-based Centre for International Forestry Research, Said that climatology data indicated the rainy season may be delayed this year and the fires could last until yearend. Indonesia earlier this month agreed to accept international help after failing for weeks to douse the fires manually and last week launched its biggest fire-fighting push yet. of Thirty-two planes and helicopters including six aircraft from Singapore, Malaysia and Australia were deployed to back up more than 22,000 personnel on the ground.