Mark gets a no-prize that'll put the fire out now for bringing us a demonstration of what state-of-the-art fire fighting aircraft look like. Firebombing is the very last bastion of the big piston-engined aircraft. Some of the very last WWII aircraft working for a living are doing just this. It's well past time for a turbine-powered craft to take over the job, and these look to be very good at it indeed.