The Pennsylvania Rail Road apparently was having issues with locomotive fires inn the mid 1950s, and so they produced a training film addressing firefighting. I found it interesting how a good portion of it matches mid century shipboard firefighting techniques.
For instance, the ex-US Army T-Boat my Sea Scouts ship used had a fixed CO2 installation. It was, I believe, later replaced with a Halon installation. But we also had a liberal supply of hand held CO2 extinguishers.