He halts his momentum the moment he sees her, jerking a step back so that he doesn't just trample over her. His eyes are bugged slightly, and he doesn't know what to do with himself for a moment. The last person he expected to see out here was Five, and he goes to the banister to look down the stairs before he even says anything to her.

But he doesn't see Eleven at all. And Five is groaning, and he can't chase a ghost right now. He sighs faintly, irritated, and turns to her.

"Are you alright?" he asks gently, bending down to offer his hand and help her up. "I was trying to catch, uh, a person. I think it was Eleven?" He offers this as an explanation, giving her a slight shrug of his shoulders as an apology for startling her. As he's pulling her to her feet though, his eyes flick to the post-it note and he gestures down at it.

"What's that?"