[OOC: The morning after
this.]
Jack is wearing a different shirt the next morning, so presumably he changed at some point - but there is no other evidence that he had slept or stopped reading through files at all. But he's in his office as the sun comes up, sitting back in his chair and making scathing notes all over one of Owen's medical writeups. He might feel bad about that at some other time.
Apart from the soft hum of the computers, the rest of the hub is quiet, most of the lights still off.