In the year 2378, bortaS served as the flagship for General Kaybok's fleet during their attack on Raknal Station. The bortaS led the second part of the assault, unleashing disruptors and photon torpedoes onto the station. However, due to the treachery of the the IKS Ya'Vang, under the command of Captain Krona, which revealed the Klingon fleet's position by giving the Klingons' cloaking wavelength to the station for them to target, Kaybok attempted to chase down the ship, only to end up having to ram the ship at maximum warp into the station in order to accomplish the mission. (ST - Mirror Universe novel: Rise Like Lions)