Geoff,
SOP's (Standard Operating Procedures) upon turning out to any Industrial or Commercial building dictate that there is a standard plan.
2 Fire Appliances and a tanker here is the norm.
In some City Brigades that would be 3 Appliances, a Hose Layer and a Command Unit.
Ray (RODALCO) may have different ideas on this because he is in Auckland and he is a Station-Officer.
Better to have more Fire-fighters than not enough, try and save a building with no-one protecting the exposures.