A hand I saw last night

[Lethe]

While running bad and getting killed last night at the card room, I witnessed a hand that seemed interesting at the time and I'm pretty sure I know what I'd do, but I thought I'd see what 2p2ers think. Hopefully this isn't too super standard and boring [img]/images/graemlins/wink.gif[/img].

UTG is loose, aggressive, and has a ton of chips in front of him. His preflop standards are pretty normal though and he usually doesn't get too far out of line here.

HJ is loose and aggro, and has been known to get out of line from time to time both pre and postflop (usually when he has a ton of chips). Typically though he just plays really bad postflop and goes way too far with his hands. He has about 20bb in front of him.

SB is an ABC TAG who is pretty good at reading hands, but thinks he is way better than he is.

UTG raises, UTG+1 coldcalls, HJ ccalls, SB 3bets QQ, UTG caps, all call.

Flop: AQ4r

SB bets, UTG Raises, UTG+1 folds, HJ calls, SB 3bets, UTG caps, all call.

Turn: Ko

SB Bets, UTG raises, HJ 3bets, both call.

River: 2

River: SB checks, UTG checks, HJ bets, SB ??