One wonders if the key issue here is 'not enough live fire drills', which while a charming pun I do mean seriously: should every firefighter be guaranteed a certain number of live 'build it and burn it' exercises per year as a condition of employment?

If they did so in concert with building code inspectors beforehand to try out various new things, had the 'what were the circumstances leading to this fire?' fire drill conditions sealed in an envelope, and won a pizza party if the arson investigators guessed incorrectly on whether those circumstances were or were not arson — then I think that firefighters might have much less cause for arson. Certainly having done IT for fucking ever, I can come up with some extraordinarily evil things to do, but my industry has 'red teams' and 'onsite penetration tests' because we understand the need for this. TREX apparently conducts 1-2 burns per year as a big serious training event, which is nice — but that's so few and so many fires are so boring and there probably aren't enough TREX burns to meet demand for live fire exercises. And, yes, I wish my own hometown's firefighters would build a structure every month and then burn it to the ground and then try to defeat the arson investigators. This can only reduce the chances of firefighter arson, and no amount of 'firing blanks' exercises are going to have a serious impact on this issue. And, introducing a competitive aspect creates a professional 'hero' outcome for the firefighters who manage to defeat the arson inspectors — they're not only now a hero among their fire industry peers, they're also a hero for the lives that will be saved by future arson investigations solved by their own fire drill arson. Sure, this isn't 'hot neighbor' adulation as many U.S. young men might dream of — but it's peer adulation, and I suspect their dreams would have little difficulty adapting.

[1] https://www.waprescribedfire.org/trex