KK: pot odds and stakes says you do have to call, but...you can be almost certain one of these guys has the ten, people at these stakes dont just bet big and reraise all in on the turn for no reason at all. In that case, you have a 0% chance to win the hand so you should actually fold. Or maybe not, im still learning

AJ you just got unlucky there, anyone that calls with 54 in that spot is just silly.