Two titles are on the line as bantamweight champion Renan Barao defends his belt against the leader of Team Alpha Male, Urijah Faber, and Barao's teammate, featherweight king Jose Aldo, fights Ricardo Lamas. Plus, two heavyweights clash as Alistair Overeem faces former UFC champion Frank Mir. "Countdown to UFC 169" takes you inside the lives and training camps of these six fighters as they prepare for battle on Saturday night.