Battle of Installation 04
Bok was stationed aboard the UNSC Pillar of Autumn crash site during the events on Installation 04. After a raid by Marine Shock Troopers, led by First Lieutenant Melissa McKay, he was assigned to inspect and haul cargo coming into the crashed vessel, for use by the Covenant who occupied it. This was to make sure that Flood didn't infiltrate the vessel at all.
He was placed under the command of Yayap, a Special Operations Unggoy, after the Unggoy arrived at the site with Zuka 'Zamamee, following a failed battle at the Alpha Base. He did not like the Unggoy soldier, calling him a "Gas Sucker". Nevertheless, he complied with Yayap's orders because he had no choice. He, along with Jak and Yeg tried to make Yayap's life difficult anyway.
One of the containers he opened contained a group of Pod infectors and combat forms. As he opened the container, an infection form drove a penetrator down his throat and tapped into his spine. Before he could be fully converted and turn hostile, the other Kig-Yar and Yayap killed all the Flood and the infected Bok before they could cause any further harm.
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