The Luxury Liner Mackinac was destroyed by a combined fleet of the Gen'an Sisterhood, the Sisterhood of Light and independant GC operatives. Iwai Kazushige, The KSP official who has been our primary target, has been confirmed to be among the dead.
The Gen'an assault squadron consisted of Sumire Ame, Nakai Yume and Squad Leader Yunoki Misaki. They faced a large force of KSP and Hogosha ships and still completed their mission. Which is why Sumire and Nakai will receive the promotion to Squad Leaders of the Gen'an Chrysanthemum Sisterhood.