On the warships I've been on, there were only a few well trained fire fighters, and the rest were poorly trained on the job. I doubt if I would have been a very useful member of the damage control team had something happened.

Galley fires could happen anytime. During times of war, guns are being loaded, missile systems are turned on and tested to ensure they are ready. Somebody could easily screw up and cause a major fire. If missiles were fired by the Moskva, then a dud could have caused a fire, and so on.

I'm not claiming this is likely in this case, but it does happen.