"You're fine," he insists, finally letting go of Murphy entirely when the train starts moving and there's no actual way for him to bolt. He lifts an eyebrow at Rocket's suggestion but decides it isn't as weird as anything he's witnessed already. He's just going to assume that happened at some point. While he won't step on Rocket, he will cast him a mild look that seems to convey they shouldn't terrify John if they want his help, or something like that anyway. "Maybe we should focus on the task at hand."