He's watching Maine's actions with interest. He knows Maine, even if he's a little bit rusty. It's rare to see Maine acting like this; open and friendly. Smiling. They're small things, and he knows that to anyone else, Maine wouldn't really look friendly at all; not actively hostile is the best that they can usually hope for. But from Wash's perspective, he's practically hanging neon lights over the fact he thinks this woman is awesome.

He manages a small smile of his own, gives a nod. "Well, that's a pretty ringing endorsement from Maine. I'm Wash. Nice to meet you."