Donnie had been staring at the mess of parts as what of the blueprints he did glimpse had clicked into place with everything else. This was well beyond anything he'd ever expect so he wasn't quite sure how to feel about it, excitement seeming the most reasonable state, joy ranking right up there, but then the confusion was still floating around and throwing it all off.

Hearing a familiar voice behind him, he managed to tear his attention away from the highly advanced model kit to watch as Tony came over to join him. He was still processing some unknown equation that now included the man whether he wanted to be associated with the thing or not, but then the list of people who ever used the place was quite short so far as Donnie was aware of. The question tugged him out of his thoughts, and the turtle returned his attention to the parts sitting on top of the paper.

"...I don't know," Donnie admitted, sounding stunned, although not necessarily at the admission. Excitement was clawing its way to the top again, evinced by his growing grin. "But I sure am going to find out!"