[Steve isn't quite sure of what to make of costumed young woman other than she seems excited over being in the Library, which is different than the majority of the reactions he's seen so far. His own cowl is pushed back but the red, white, and blue is obvious as he answers.]

Hello, miss.

[It probably should be 'Ms.' but sometimes Steve reverts back to the manners he'd been taught decades ago.]

I'm Steve Rogers. Captain America when I'm in this uniform. I've had a couple adventures with them. One was weather related and the other...

[Pausing, he almost looks sheepish.]

I'm not quite sure what I saw out there.