https://www.outsideonline.com/2079591/can-10-million-firefighting-machine-actually-stop-fires converted Boeing 747-400 equipped with a tank that can hold 19,600 gallons of fire retardant—nearly double the size of the tank in the next largest airtanker. The plane, named the Spirit of John Muir, can cruise at speeds up to 600 miles per hour for as far as 4,000 nautical miles and get to any fire in the western U.S. in a few hours.