Martin's not exactly used to being forcibly moved, but in this case he's not entirely displeased about it.

"Er-" He falters a little, and swallows before he can say anything stupid.

He peers down to his feet, back up to the target and back down again and takes note of where he should be standing. Right.

"So, is this the safety?" He thumbs towards the catch very carefully so as not to disturb it. He's still keeping his fingers well away from the trigger.