A giant aircraft that can fly high above oceans on intercontinental flights instead jets in low and slow over a flaming forest, trailing a long plume that settles on the ground and creates a wildfire-stopping barrier.
The operators of the Boeing 747 converted from a passenger jet into a firefighting air tanker say it has proven itself battling forest fires in countries outside the U.S. The modifications allow it to drop more than 19,000 gallons (72,000 litres) of a flame-squelching combination of ammonium phosphate and sulfate mixed with water that comes billowing out in a red-colored line.
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