Marcus was having a difficult time getting use to the weighlessness. To him, it didn't feel like flight, this was more like a lack or gravity. He didn't fly from point A to point B, he floated there. To him, flying mean having to push upwards using the same amount of force or more that is pushing you down. He felt nothing pushing him down like he would have if he were flying, and due to this he was having a difficult time. There was literally nothing to it where there should have been, and it was messing with what his body was telling him.

When he felt the pressure of Shay's hand getting weaker, he looked at the woman who's hand he had he laughed along with her, using a similar nervous laugh, or simple chuckle in his case.Although he didn't say anything when she had lost her balance, his eyes widened and looked at her as he saw her grabbing onto the sleeve of his shirt and pulling him closer to her. He didn't object to her actions, and actually enjoyed her closeness. Anything that Sun had said wasn't being registered in his head, as he could only focus on flight and Shay at the moment.