You can see the water blast about 1:00 into the video, just after one firefighter points out the drone to another holding the hose.
https://youtu.be/lEsieFoe-ns
Drone Gets Shot Down By Firefighter
FIREMAN SHOOTS DOWN DRONE WITH HOSE
FIREMAN SHOOTS DOWN DRONE WITH HOSE
You can see the water blast about 1:00 into the video, just after one firefighter points out the drone to another holding the hose.
https://youtu.be/lEsieFoe-ns