St George carrying 50 gallons, multiple cans quickly

Another call for a drop. He flew back to the Big Wall and grabbed a tall blue recycling bin swollen with over fifty gallons of water. He caught a glimpse of Madelyn switching her hose to a new barrel before he soared back into the smoke.
He remembered Sally T’s instructions and poured his water over a burning grapefruit tree away from the burning homes. The branches spat and hissed and sputtered, but the flames vanished. So did some on the ground around the tree.
His next drop went onto the roof of one of the salvageable houses, and the third went down its chimney to soak the first floor. The next barrel traced a thick line across the fire’s west flank and knocked down two exes, extinguishing one of them. He carried each of the last two barrels back over to the south side of the fire, soaking trees and rooftops and lawns.

Excerpt From Ex-Isle, pg 28
Peter Clines
https://books.apple.com/us/book/ex-isle/id989619017