At some point, Tarnat served as the Enyo's captain. His actions led to the cruiser gaining reverence in the navy. By 2003, he was succeeded by Captain Matias Torres, who was later reassigned to the battleship Tanager on June 1, 2003.
On September 10, 2019, Tarnat attempted to flee Anchorhead along with other commanders in the navy during the LRSSG's Operation Domino. Before he could escape, he was shot down and killed by Strider Squadron.