It had to happen . . . Having served Japan Airlines for decades, the venerable B747-400 has found another life—not in air cargo, but converted into a tanker that fights fires and saves lives in the western United States.
  In 2018 California is experiencing its fiercest forest fires in history.
  Yosemite Park is closed as the state is burning north to south. From Klamath National Forest to the Los Angeles metro area, several fires are consuming an area larger than New York City.
Elsewhere in Colorado, fires are also out of control.
  Enter the Global SuperTanker, AKA “The Spirit Of John Muir,” a privately owned rescue aircraft based in Colorado.
  The Global SuperTanker dwarfs any other method of delivering either water or fire suppressant. It is able to carry up to 19,200 gallons at close to 600 mph.
https://www.youtube.com/watch?v=ygXto9jdQP0