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Lieutenant Wallace is a crew member on Galactica who participates in defending the ship from a Cylon boarding party (TRS: "Scattered").

Lieutenant Felix Gaeta reports that Wallace's team eliminates two Cylon Centurions and corners a third in the ship's laundry, near Auxiliary Fire Control. Gaeta states that, despite the third Centurion's inability to move, it was still firing at Wallace's team (TRS: "Valley of Darkness").