Aw. This sort of relaxed easy smile really does look good on Margaret. Not in a way that makes him want to leap into her arms, but solely because it's nice to see her look really truly happy for once. He laughs at the joke, offering-

"You're a lot more alive without all of that dead weight. But uh- it's just Hawkeye here, I'm a regular civilian again."

In case she couldn't tell from the floral waistcoat.

"So what's next for the great Major Margaret Houlihan?"