In my experience the wiring in US naval vessels is far from ideal for the prevention of spreading fire. Up in the ceiling of the major corridors there has been, on all the US naval vessels I've been on, a complete rats nest of cable, covered in paint, held in with plastic cable ties. If that lot catches fire it would spread along all the corridors leading away from the seat of the conflagration, and also start filling up the corridors with hanging, burning cables and thick, toxic smoke.
This would make it harder for firefighters to get to the seat of the fire, never mind contain it.
I wonder if this has been a factor in this incident?