Steve bites back another laugh. He doesn't want her to think he's mocking her. But her inexperience with different kinds of food is just another hatchmark on the side of the weird, and her not knowing what a diner is - well, maybe she's from another planet, like Thor. It's not unreasonable to think that there are other aliens out there, more discreet than the Asgardian.

And then there's that question. He nods, remembers she can't see it, and says, "Yeah. I served during the second World War." A pause. "Do you know about it?"