I'm thinking that Owen might notice that Kort's accent isn't exactly American. Whether he decides to ask about it or not, I'm just curious to know if it's ever been accounted for in canon? There's nothing in Wiki and I've probably zoned out during some of his scenes, so if anyone has a specific, canon-confirmed reason, I'd love to know.
My personal fanon right now is that he works for the CIA, maybe on some kind of independent contractor basis, but isn't a professional CIA agent, if you know what I mean. This makes sense since he always seems to have some game of his own going on anyway.
If you've got any canon details about this I should be aware of, please let me know.