11R turbo sat. - preflop play

[blockafor]

I was playing the Stars 11R turbo sat. to Sunday 215. There's about 35 left. Top 20 make it. Blinds are 600/1200 with antes (elevating every 5 min.). I'm 10th in chips with 15000. UTG goes all-in PF for 7500. UTG+1 folds. I'm UTG+2 w/ATo. I have no reads - this is the 5th table I've been at this tournament and we're hardly an hour in. What would you do?