any idea why there’s no green symbols on the Cat C and Cat D...

any idea why there’s no green symbols on the Cat C and Cat D options, SB?

Perhaps you have a theory as to why the Emergency Services opt to use H2O when it is plainly obvious that it doesn’t extinguish these fires?

My guess is that the water may help with reducing the toxic gases spewing into the atmosphere, would you agree?

Better to have the toxic elements put into soluble form and leach into the groundwater.
That way the potential for adverse effects can be swept under the carpet for an extended period of time.
With the bonus of being able to blame the water contamination on something else, down the road.

Perhaps I’m being overly cynical?