“Sound the alarm! Abandon ship! All marines and support, abandon ship!” Haemon barked, as he turned to make his way from the bridge of the flagship of his Chapter, the last great sign of Imperial pride that remained after war and devastation.
Haemon would arrive, via teleported, on the Aquila, along with some of the bridge staff. Most of the other marines would have exited by Thunderhawk with vital supplies, like protogens, or teleported onto other Lamenter support ships.
When the Penance started to break up, it was violent, as the main reactors lost containment and the contained plasma expanded exponentially, tearing through walls, bulkheads, and into the other reactors. The Orks gave a great cheer to see such a might enemy toppled. “Whaaaaarrgg!”