The eyebrows raise when Jack turns on him with the gun still raised, but it does get put away. As does the eyebrow raise, while The Doctor drops his feet from the table and pushes up from the chair he'd taken to tackle this newest, so far unexplained, phenomenon.

"I never know what's going to happen. It's half the fun," he says, with something closer to only a strained fondness this time covered with dry humor. Because Jack did comply. Even if The Doctor doesn't approve of guns on the whole still. Or ever. At least it is away. Which means he can answer the question asked of him, too.

"Not me." His hands end up in his pockets. "Or Rose. She's here, too. I just arrived. She's been here a little longer."
And. Jack is here now. And. It's been a long time. It's a veritable tangle of reactions just looking at him.