I'll be more than happy to give you full access to my reports. But for the moment, I'll give you the essential briefing on a secure line. [They are, after all, his contingency plan. He'd offer to let Gaunt read them right now, but he's pretty sure the other commissar is going to be planting daisies for a few days, if he can judge by his own time on restraints.]
[Cain switches the audio feed into a private filter.]
The shortest possible version is that this so-called prison is great stewing pot of humans, xenos, psykers, mutants, and others. As stated, the humans are largely from a small selection of ancient Terran eras, and a number of them hail from comparatively peaceful cultures and times where they largely made war with each other over border conflicts and matters of faith. Some are from periods of war against xenos and daemonic taint, but on a smaller scale than our own beloved Imperium. An even further limited few are from the early eras of space travel and planetary colonization, but for the most part, a number of our esteemed distant ancestors deem the idea of traveling the stars to be akin juvie bedtime stories.
[He figures this is a good place to stop yammering, and he can only keep up the pseudo-official-sounding talk for so long without rolling his eyes at himself.]