That expression has never sat right with Archer and he can't say he's pleased to see it appear now, in a situation like this. Still, he doesn't say anything, waiting until Kimblee has said his piece. That much is certainly true - this place is better than Amestris and of course it beats being dead. But still...

"I know I don't have to be."

It's a simple statement, but quite the familiar one. He doesn't have to worry about Kimblee. He'll do it anyway.

"Thank you for telling me."