Seeing a lot of these in the Cali fires.
https://en.wikipedia.org/wiki/Canadair_CL-415
The videos I've seen online are impressive. Demand for these will increase.
Related: https://abc7ny.com/post/california-wildfires-fbi-shares-photos-pieces-drone-damaged-super-scooper-aircraft-flying-palisades-fire/15792412/
"The FBI released new photos of a damaged water-dropping super scooper firefighting aircraft that collided with a drone over the Palisades Fire.
According to officials, the plane collided with a privately-owned drone, causing significant damage to it. The drone put a 3x6 hole in the aircraft, causing a 20- to 30-minute delay in the aerial firefight."
Fucking drones! Happens every fire. What is wrong with these people?
Anyway, the OP reminded me of the now-defunct Global Supertanker
https://en.wikipedia.org/wiki/747_Supertanker
It carried 70,000 liters, up against the 6,000 in the CL-415. On the downside, it needs an 8000-foot runway and considerable turnaround time.