The question mark isn't surprising at all. Hunter knows what he just said is strange, it was strange for him when he first showed up despite having knowledge of other realms and portals to them. If this thing doesn't have that, then it's likely very confused right now.

"This realm - the country we're in, it's called the United States of America." If he sounds a bit awkward saying that it's because he isn't used to it. What a bizarre name for a land. "The state we're in is Massachusetts. The ADI is an organization that was founded in order to stop an apparent apocalypse that's going to happen here."