Police, firefighters, and military don't have to be provided by governments. There are plenty of historical examples of all three being provided by private institutions (indeed, the article referenced in this discussion talks about such institutions for firefighters in England over a period of several centuries).

Nor does charity for those in genuine need need to be provided by governments. Indeed, charity throughout human history has worked best when it is provided by private institutions made up of people who genuinely want to help others, of which there are plenty in the US as there are everywhere, not by government departments staffed by bureaucrats.