for some reason im stuck on this river

[b33nz]

i have no reads. thats an interesting river card, what should i do?

Full Tilt Poker
$3/$6 No Limit Hold'em Ring Game
6 Players
LegoPoker Hand Converter

<font color="black">Stack Sizes</font>
BB: $579
UTG: $266.80
Hero (MP): $653
CO: $388.50
BTN: $222
SB: $574.5

<font color="black">Preflop:</font> A 9 ($9, 6 players)
UTG folds, <font color="red">Hero raises to $21</font>, CO calls $21, BTN folds, SB calls $18, BB folds

<font color="black">Flop:</font> 2[img]/images/graemlins/spade.gif[/img] K A[img]/images/graemlins/spade.gif[/img] ($69, 3 players)
SB checks, Hero checks, <font color="red">CO bets $69</font>, SB folds, Hero calls $69

<font color="black">Turn:</font> 2[img]/images/graemlins/spade.gif[/img] K A[img]/images/graemlins/spade.gif[/img] [3] ($207, 2 players)
Hero checks, CO checks

<font color="black">River:</font> 2[img]/images/graemlins/spade.gif[/img] K A[img]/images/graemlins/spade.gif[/img] 3 [J[img]/images/graemlins/spade.gif[/img]] ($207, 2 players)
Hero

[swolfe]

i don't understand the flop check

[Praetor]

check fold