Dean relaxed a bit at the brass in the man's hand. For now at least. He crossed his arms as he watched the guy, brow arching a tiny bit as he shrugged a bit. "...We get that a lot." Not in so many words. But they did get that. Usually Dean more than Sam though.
The older Winchester didn't let his guard down. He just stood there, sizing the guy up. Sure it wasn't ideal but he didn't know who he was or what he thought he knew about them. They were human. Hunters. Even if part of that wasn't going to last long.