There's a second or two of pause, his brain lagging somewhat, until he catches on. What do you mean? Bones asks as though he has no idea he was ever here. Which can only mean one thing: he doesn't remember.

"Uh," he looks down at his own hands and arms, checking for injuries. "No, I... I'm fine. I just... I wasn't expecting to find you here, is all."

Relax. Act normal. It's fine, really— probably for the best. He tries to force a small smile, patting Bones awkwardly on his shoulder once they're close enough. "I'll dispatch a team to collect our friend here. But in the meantime, we should get out of here."