Hard facts? We have no libertarian society so there are no hard facts. You seem to have trouble with that concept. But some things even in an authoritarian society are still performed without the use of force, so,,,
If you want to know how fires have been put out without the threat of violence by people working together all you have to do is look at history. And since volunteer fire departments and private firms provide these services in the REAL world all the time, the evidence is easy to find.
Many people, apparently you are one of them, don't seem to be able to see civil society all around them all the time. When you are hooked on coercion as the answer to all problems everything begins to look like it must work that way. I feel sorry for people like that.