Cruising along with AA when all hell breaks loose. Turn action?

[surfdoc]

Can you guys help we out with handreading here? We have a pretty dry board and then one guy checkraises the field followed by another guy who then call/caps. The button would be pretty likely to 3 bet preflop any pairs he is playing. So he looks like maybe 89. Hard to give him 2 pair although 7Ts may be in his range given he previously called 3 from the BB with 52s. How about the BB? What do we think he has?