First Aid does know. He remembers, and his spark aches for what Chris must be feeling right now.

"You're so brave," he says quietly, "That was very, very brave of you, to help River even though you knew you'd be paying for it later. I'm so proud of you, and I'm so sorry that you had to do that."

This division of labor is untenable, he's starting to realize. He can't be the head surgeon and head first responder, not if it means leaving Chris with tasks they're not able to accomplish without pain. He's not sure how to fix it yet, but First Air resolves that he will do something about this. Something has to change.

For now though, he'll hold Chris close, petting their back and offering as much comfort as he has to give. This is his job now, until Chris feels better.