Fifteen years after Emergence Day, Dersau worked aboard the Emerald Spar Imulsion Platform. When they were warned they were about to come under attack by Lambent Stalks, she began helping other crew members load weapons with ammo. After Stefan Gradin briefed them, Dersau began asking Cpl. Damon Baird questions about the Lambent Polyps, learning how they were quick but couldn't swim, but didn't drown quickly. She decided to treat them like cockroaches, and use a flamethrower to deal with them. As they waited for the Stalk to arrive at the platform, Dersau talked with Cpl. Dominic Santiago, but she also had a large space to herself, with no one wanting to get accidently burned by her flamethrower. Once the battle kicked off, Dersau headed into the corridors of the platform to clear out the P