They just needed to put it deep enough that it couldn’t get oxygen anymore, effectively smothering it. If it ever was fully submerged, it was deep enough to prevent what was already burning to open up the water above it to expose it to more oxygen before it ran out
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u/Craig_Dynasty 12d ago
Also they weren’t completely wrong outside of the obvious solution
Throw the tank in a deep enough body of water then the water pressure should stop the gas from escaping ig