Eventually Degroot told his children that he wanted to kill them anyway. Bergman, the cruelist member of all, saw how everything made sense. Eventually he enlisted Ollie and Jason to be in the Fireteam during the Battle of Harpton. After realizing a Nuke being deployed in New Harpton on Reach, 2553. Kirsten eventually made the Innies stay at bay before they activate the Nuke. However, Ollie had to sacrifice himself in order to save Harpton since he activated the Nuke in space. Ollie was confirmed KIA