Tarkin agreed to a risky plan suggested by Vader and allowed rebel operatives to escape the Death Star after freeing Princess Leia Organa. Tracking the rebels led Tarkin to the main rebel base on Yavin 4, giving the Grand Moff a chance to cripple the Alliance. When an aide analyzed the rebel attack and suggested that Tarkin evacuate the battle station, the Grand Moff turned on him in a fury. Surely his moment of triumph was at hand.