Following the terrorist attack on the Jedi Temple of Coruscant in 19 BBY, Letta Turmond was imprisoned in the Republic Center for Military Operations due to her participation in the attack.
Ahsoka Tano, the Jedi Padawan who arrested the terrorist, visited the facility at Turmond's request, but was required to surrender her lightsabers to Commander Fox as a security precaution.
As a result, he regarded the Jedi Following the initiation of Order 66 and the Republic's transformation into the Galactic Empire, Fox and a group of clone shock troopers were patrolling the grounds of Coruscant.
The Jedi Master and librarian Jocasta Nu used the Force to mind trick the guards in order to pass them safely.
In his panic and desperation, the ARC trooper raised a blaster pistol at the approaching guards, but Fox opened fire, killing Fives with a shot through his heart.