Interesting AKs in Step 2 tourney

[jacki]

I wasn't sure what to do in this situation.
The original raiser I read for a decent, TAG. I didn't really have a read on the BB rereraiser.

I knew the CO was calling regardless of what I do.

Do you call or fold?

Party Poker No-Limit Hold'em Tourney, Big Blind is t50 (7 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

<font color="#C00000">BB (t1535)</font>
UTG (t1785)
MP1 (t1080)
Hero (t690)
<font color="#C00000">CO (t3445)</font>
Button (t1075)
SB (t390)

Preflop: Hero is MP2 with K[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/spade.gif[/img].
UTG folds, MP1 folds, <font color="#CC3333">Hero raises to t150</font>, <font color="#CC3333">CO raises to t700</font>, Button folds, SB folds, <font color="#CC3333">BB raises to t1535 (All-In)</font>, Hero ......????