$33 turbo rebuy to $1M guaranteed ($1000 seat) 11 left 8 get seats

[WinBig]

$33 turbo rebuy Saturday night to the $1M guaranteed this past Sunday. Top 8 players get the $1000+50 seats and 9th place gets $480. Down to 11 players with blinds at 3K/6K and ante of 300.

There are 5 players at my table with a short stack of 5000. There are 6 players at the other table and two of them have stacks of about 7000.

I have 21000 after posting the BB. It is folded to the SB who goes all-in. He did this the last time I was in the BB and I folded. I have AJ suited this time. Is this a call I should make with three short stacks out there and the blinds this big? I have SB covered so it is 15000 for me to call. I guess the SB range could be any two at this point in the tourney.

Call or fold?