During a battle against the Locust, Gus and Foxtrot were assigned to help Delta-One clear an area of Locust forces. They cleared out a grub hole, and moved on to another street. However, when Delta passed by the supposedly clear area, they came under attack. Cpl.Dominic Santiago called Gus over the radio, and he and Sgt.Alex Brand came running to their assistance. When they arrived, they found a sniper team had Delta pinned down, but were unable to reach the snipers because of Tickers, and they had no grenades. However, Alex climbed ontop of some rubble, and jumped onto the building with the sniper nest. She shot the Tickers, setting off a chain reaction that killed the snipers. Gus then joined Delta as they waited for Alex, and was amused when Dom thought that Alex was a guy. When Alex was transferred to Delta for a mission to the city of Jilane, Gus stayed in Foxtrot.