"Where'd you go, by the way?" He takes it as a given that the op was successful but- he has no idea what the op was. Just that there was a thing that Sam went off to do that, apparently, involved blood. Some kind of danger, probably. Maybe a recon op? Maybe something personal.

Though.

The list of things that would be bloody and personal is pretty damn short. "It was quiet here without you."

Not that he's loud but- his presence kinda left the whole place cold. Weird to have such a visceral reminder- no one to lean on, to talk to, to think about. He'd fallen asleep in one of Sam's shirts both nights.