Kaidan shocks a bit, but manages to keep it off his face. His arms drop from where they crossed defensively and he rubs the back of his neck a bit. He honestly hadn't expected Garrus to back down so easily-- the thing that made Garrus and Shepard inseparable was their similar stubborn streaks. "You don't need to call me that here. I'm not going to pull rank on you. I suspect that only works with Shepard, anyways."