Sia Norrin, a Corellian female Twi'lek mechanic, worked for the Galactic Republic throughout the Galactic War. This conflict pitted them against the reconstituted Sith Empire. In the year 3640 BBY, amidst the Battle of Corellia, Kapp Zyman set off explosives on the green line of the rocket tram, creating a path into Coronet City. Despite this, Sia, along with a team of other mechanics, successfully fixed a different line, one that had sustained damage from an Imperial assault. This provided Republic troops with a different way to get to Axial Park.