AT as BB facing a raise

[Aviston]

Ultimate Bet 0.25/0.50 Hold'em (10 handed) converter

Preflop: Hero is BB with T[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/spade.gif[/img].
UTG folds, UTG+1 folds, <font color="CC3333">UTG+2 raises</font>, MP1 folds, MP2 folds, MP3 folds, CO folds, Button folds, Blue folds, Hero calls.

Flop: (4.40 SB) 9[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players)</font>
<font color="CC3333">Hero bets</font>, <font color="CC3333">UTG+2 raises</font>, Hero ... ?

Do I just let this go and assume AK - AJ?