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Drones Power Up to Fight Wildfires in US West

Consumer drones look like children's toys compared with the unmanned, water-dropping helicopter that was demonstrated for U.S. government officials this month. The K-MAX chopper is the largest of several remotely piloted firefighting aircraft to get a tryout this year for firefighting duty. The dual-rotor helicopter looks as if it’s been squished from the sides. It demonstrated water drops and ferried supplies up and down a mountain. All of the missions were flown by remote control...

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