> A system like this with thermal cameras could find injured people much faster than a search party every could.

This is done a lot, you are not used to the idea of 'Swarm/Formation' so you are using it to cure everything.

One long range drone with thermal cameras (and other wavelengths) is all you need. No formation is needed or wanted.

I still rarely see even one drone used. We need to start with one, if its useful.

I can give you many locations with invasive species, swarms won't solve that. Unless you give the swarms guns.

But one drone with a gun would kill pests fine. I think even with hunting humans most killing wouldn't need formations.