yes it is water they used!
That’s me in the JP, we had an issue when trying to turn round & taxing back rudder pedals didn’t want to response to the inputs. Then we noticed fire trucks wizzing past and turning round flashing there lights at us.
This was then then the first we knew about the fire!
Turns out it was pad failure that caused the issues.
bt a great response from the AFS.
and no major damage caused!
After the fire was out they then again sprayed it with water to help cool the gear down and stop it reigniting