Beau

aside from folding pre flop lol i would definitely just check. there are very few hands he is going to raise 5x pre and fold on a AA3 flop. I would check this flop and if he checks again on the turn then I would fire, also depending on the size of his turn bet (if he chooses to bet) I would consider a check raise because I think that's how you would play a hand like A10