Off the top of my head, “Left of Bang” by Patrick Van Horne is an excellent resource.

The Marine who created the Marine Corps Combat Hunter course adapted it for the civilian sector, and offers it through his company, Emergence Disrupt. I believe he offers it online, now. It’s classroom type work, not tactical.

However, those are close, but maybe not quite on the bullseye for personal threat modeling. I’ll ask around to some guys who work in personal protection and see if I can come up with some more focused resources.