AK flops an Ace, turn brings confusing card, what now?

[Annulus]

whats best line here on the turn. 2nd or 3rd hand of the tourney.

15/30 Tourney Texas Hold'em Game Table (NL) (Tournament 16398710) - Fri Oct 07 00:30:19 EDT 2005
Table Table 12185 (Real Money) -- Seat 2 is the button
Total number of players : 10
Seat 1: sunny19 (800)
Seat 2: FlyingChina (790)
Seat 3: dm050173 (785)
Seat 4: big001 (825)
Seat 5: shermstar (800)
Seat 6: Dyang023_S2K (800)
Seat 7: JTSpaulding (800)
Seat 8: Nini_Mags (800)
Seat 9: J_I_M_M_Y_J (800)
Seat 10: crazyleg1234 (800)
dm050173 posts small blind (10)
big001 posts big blind (15)
** Dealing down cards **
Dealt to Nini_Mags [ Ks, Ah ]
shermstar folds.
Dyang023_S2K calls (15)
JTSpaulding calls (15)
Nini_Mags raises (65) to 65
J_I_M_M_Y_J folds.
crazyleg1234 folds.
sunny19 folds.
FlyingChina folds.
dm050173 folds.
big001 calls (50)
Dyang023_S2K calls (50)
JTSpaulding calls (50)
** Dealing Flop ** : [ Jc, 7d, As ]
big001 checks.
Dyang023_S2K checks.
JTSpaulding checks.
Nini_Mags bets (270)
big001 folds.
Dyang023_S2K folds.
JTSpaulding calls (270)
** Dealing Turn ** : [ Jd ]
JTSpaulding checks.