I'm...familiar with the Yeerk situation even though I'm from another world. I was put in the brig for trying to kill one. I didn't know all the circumstances, and that''s my fault, but after hearing some people on the ship I do know one thing: that Yeerk was rare in comparison to these.

If there's anything I can do to help you save your brother, I will. He's a person on this ship like anyone else.