She glances back at Alex instinctively, and the tone of his voice does get her to calm down a bit. She sighs. Miller's reaction is understandable—thinking about them, thinking about Mars' part in them, still makes her chest constrict.

"Mars partnered with Mao to create them. They're... they were human. I don't know if there's anything human left in them now. We couldn't even touch the thing. It was too fast. It..." Bobbie trails off, clearing her throat as she looks away. Too much information.