Jack makes a quick pit stop in his room to change into dry clothes, already feeling the burn on his skin as it warms up again.
Heading back out into the hall, he hesitates for a second outside Beckett's door. After the awkwardness of him falling on top of her--and neither of them moving for a moment--this might not be the best idea. But then he'd told her he'd be there in a moment, as as much as part of him has misgivings about it, there's part of him that wants to show that whatever that moment outside had been, it was just an aberration; nothing to see here, move along.
Taking a breath, he raps decisively on her door.