The Doctor manages not to wince visibly; even he can recognise that that is not the level of gravity one affords actual death-defying adventures. Or at least, not when Ianto is listening. He really would rather have been the one to address Ianto's concern for Callie's safety, put the proper spin on it, hopefully mitigate some of the qualms Ianto had expressed after punching him in the face that one time, which, despite being a flimsy excuse at the time are suddenly slightly more relevant. In his defense, he didn't really think ahead this far when he was using those stories to make up for how utterly unimpressive being trapped in Manhattan was. But Callie does have a point. She's, however unfortunately, already got rather a lot of a handle on the idea of the universe as a dangerous place.

"Well, you can think about that while you get settled. Universe isn't going anywhere, not last I checked." Though if she's too overwhelmed to think of the perfect inaugural trip, he's got a few ideas. "Ianto might like to catch his breath first, too." Or put in a request to be dropped off somewhere. Once the dust is settled, will he even want to do any traveling? He'd seemed pretty done with the notion, before, but that also hadn't really jived with his continued living in the TARDIS. Still, wouldn't want to twist his arm. And the TARDIS that was so insistent that Ianto have a permanent place on board if ever he wants it, isn't here anymore. Callie, however, is. "And I wouldn't mind a chance to make some adjustments, record some things. About the rift." So responsible. Such work ethic. Nothing cagey or inscrutable here at all.