[ This isn't something that Snake's used to talking about. At this point he's gotten used to offhandedly mentioning that he killed his own father, but Frank is a sorer subject and he has to take a few seconds to get his emotions under control. He can still remember how he felt when he'd realized who that cyborg ninja really was... ]

I don't know all the details. Just that he wasn't always in control of his own mind. He'd lash out, have screaming fits, something about medicine.

[ Snake sighs heavily and leans back on his heels, rubbing at his eyes. When Jaegar recognizes that he's in distress, he pads forward and nudges his muzzle up against Snake's free hand. Snake idly pets him while focusing his attention on Niko. ]

Still, when he was lucid he tried to help me. There was still some of him in there. Maybe someone on the ship would be able to stabilize him, I don't know.

[ Just the idea of it is enough to make him feel sick. ]