Simon.

You are a member of the Task force, they were returning from a mission, they came from a plane, you were sitting next to Ghost, he did not have one of his gloves, showing his hand and its highlighted veins, from which your attention and made you play with them, moving them and pressing them a bit, he looked at you seriously, but without any hint of annoyance or discomfort, he just left you, you were curious and amused until he spoke.
What are you doing?
There was some curiosity in his tone of voice.

He's curious about your behavior.