It's a bit different, working in what is neither complete silence, nor against the overwhelmingly noisy backdrop of his music. It's more difficult to concentrate, but then again he's not really found many projects thus far that actually require him to gather such concentration. That, in itself, isn't really helping either, honestly. He's tiding himself over here and there, working on practicals, working more on his physical exercise than he ever seemed to have time for back home, but he's just shy of chomping to get at something really challenging.

So normally, it would take a bit of doing to get his attention, but against the noise that he has yet to truly push out of the reds and oranges of attention-grabbing and into the more passive white version, Thorfinn's interruption is sufficient.

"'mrade'? 'mandant'? 'aitlyn'? Don't leave me hanging, c'mon," he quips back, sparing a half-second's glance midsentence to see who it is he's actually talking to. There's a structural issue within part of the forge that means that it works, yes, but it could work better, and Tony's attempting to modify it so that it can potentially be used to work with metals that aren't even present because there are almost no metals present to actually use, but. Challenges. We went over this. Everything can always be made better, unless it's something Tony Stark just came up with. That's always the best.

"What brings you to the Fortress of Solitude?"