While stationed in the Dorado Hills, Sigma-One used Centaur II-W0801 to get around. While on their way back to Jacinto, Cpl. Damon Baird and Pvt. Augustus Cole picked up Delta-One's distress signal when they came under attack from a Brumak. Sigma drove II-W0801 to assist them. They picked up the Gears and tied their APC to the back of II-W0801, and drove it through a canyon. When the Brumak fired on them, it hit the canyon wall, and became buried under a pile of rocks. Sigma then dropped off Delta to continue their mission, and headed back to Jacinto in II-W0801, taking Lily, a Stranded girl that Delta had rescued, with them.