A common sense approach to fast developing fires driven by plastics in fuels
I do not know who said it first, but "I like to have a long distance relationship with fire". They understood the best way to achieve this was with a high application rate and low nozzle reaction (straight or solid stream). This is whether you're applying the stream from the interior or the exterior as well. Particularly with a smooth bore nozzle you can utilize the reach of the stream and count on it being effective all the way to the solid fuel. The low nozzle reaction also allows you to keep the line open and even advance while flowing. With a high and constant application of water you will be utilizing the safest yet most aggressive approach to extinguishment driving products of combustion away from survivable space.
When facing a working structure fire consider that a high application rate gives you both adequate gas cooling and soaks all the fuel (including unburned fuel). It delivers more water to the surfaces of the room due to larger droplet sizes and fallout rate. Why would we want something else for interior firefighting? I find it troubling that people would advocate for fine droplet or lower / slower application based on gas cooling which is not extinguishment.
To deal with today's "high energy" fires I advocate creating a "Water Grenade". Use a high application rate with big droplets ensuring there will be no surviving heavy bodies of fire as you push forward. Ensure no fire will light up behind you as you push to and kill the seat. Kill the fire and kill the energy pump, extinguishment happens at the fuel surfaces.
If you're still on the fence or worried about water damage consider that Paul Grimwood who I consider to be one of the creators or "authors" of 3D firefighting recently stated:
“A firefighter once asked me: If you had to choose between streams, one or the other, what would you take with you into a fire? My answer was ‘The high flow-rate of a solid bore is generally more useful to me than a burst of finely divided water droplets’. In a fast developing, high energy, the water-fog may get you to the fire as you cool the gases on the approach route - but if you don’t have the capacity in your stream you won’t handle the fire base or the gas-phase fire when you get there.”