We've moved away from portable pumps except for small ones such as for a woods fire (75+- gpm).
We can haul water from long distance quicker and more efficiently than to tie-up manpower with portable pump operations (when they run)

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We have a 3300, 3700 & 2500 gallon Tanker on the first alarm, as well as 3 engines with 2300 on them. Gives us a good knock-down punch even if we have to truck it from 5 or 6 miles. With mutual aid on a second alarm response there's another 3000, 2500 & 3500 coming. I've run a few incidents where we've had 25000 gallons on wheels running a loop from multiple fill sites.
The downfall is that multiple fill sites have to be established in a hurry, that and my hometown is all hills, so every fire always seems to be on top of a mtn somewhere

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Kinda my thing, if I can't be inside with a line knocking down some fire, leave me with the water supply, we'll flood the IC with more H2O than he knows what to do with.
As for tankers (with wings

) there are none. Any rain showers from above are coming from the Huey variety, and with only 3-4 choppers covering the entire state we're pretty much on our own.
Sometimes it seems like our only option is a 100' platform and a big stream of water

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On edit: Friend of mine is deep into fire/ems in Northern CA and always laughs at me when I talk of tankers, at least until he saw our operation.