Seriously though, 3-bet pre all day. River is tough. Your hand is under repped so it's hard to say what he has here. AA/KK are both possible and so is a set. Best you can hope for is AT/KT or a maniac missing on AK.
Hmm it's actually closer than I thought. If his range is TT+ and AT, you are ahead here. You remove AT and you're crushed. So I suppose that's the question, does he do this with AT or something weaker than JJ?