Emergency uses are definitely an interest (among the top). I have a co-worker I'd like to speak with, but I'm also interested in the technology in general.
Discussion
Look up S2 underground and the JS8Call protocol. It is a digital mode where each computer/radio is like a relay node. Works really well on lower power and with lots of interference. You can also reach the whole US for less than 1000USFiat. I actually listed a kit for sale on the Nostr marketplace to do this but it is going for low price point. Legally it also requires a General License to do HF. What does your buddy have for radio equipment?
I'm unsure of what he has specifically, but I am reaching out to find out more.
Let me know. I struggled trying to find info because some Hams think they are keepers of the holy Grail and won't help you until you pass an arbitrary test that doesn't teach you how to set up and operate a radio. The test is just to make sure you follow government rules to use "their" airwaves and there is a bit of basic electrical safety also.
FYI, 
Thank you for the attempted zap. Apparently strike and amethyst combo have a 100 sat minimum unless sending strike to strike.
Weird.
Yea. I reached out to strike and they said they don't have any limits. Maybe I messed something up setting up my amethyst app. I'll have to go check.