[semi-extrinsic]

Yeah, maybe I am over-estimating, I only have advanced open-water. But I thought you had to have logged like 50 dives at X depth between each step up the training ladder for trimix, so you need a minimum of like 200 dives total to reach hypoxic trimix? In my book that is multiple years of practice and not everyone will cut it.

So an organization either needs to make preparations for this many years in advance, or try to recruit someone who both has some form of extremist beliefs and a hobby that requires very specialized training. Neither of those things are very simple, but the first one is doable, yes.