I've often wondered about this. It's called custody, but you can be taken into custody without being charged and without charge you, presumably, wouldn't be under arrest.
What if the person doesn't wish to be taken into protective custody? Is a warrant issued for protective custody? If so, would that person then be put under arrest and read their rights? If so, there would be a set time after arrest when the person would have to be released or charged, wouldn't there?
I've read the Wikipedia page on protective custody, but it doesn't make clear what the legal status of the protectee really is.
Does anyone know this? What about military custody, does that differ?