Having spent many an hour on a Bambi Bucket on many extremely large forest fires, I can safely say I wouldn't of gone anywhere near that building.
I have experienced first hand the winds, up drafts and turbulence around large fires. When a fire burns with that heat and intensity, you don't actually drop on the fire, the water/foam would evaporate before it hits the target. You drop around it to soak the bush to slow it down.