"Of course there's a reason!" Jack said, turning to walk backwards and look at him as he spoke, moving forward again as the Doctor caught up.

"I look good in it," he said by way of explanation, a small smirk with his words; he knew it was true. More than that though, it had started off as uniform. Uniform and then some sort of mask, some sort of protection and a persona, and it suited him. He liked it. And it had become as much who he was as anything else.

They reached where the water lapped against the sand and Jack crouched down, touching his fingers against the edge; making sure it was real.

"Why do you always wear the same two suits?" Jack asked, looking back over his shoulder. "It's not like you're not the adventurous sort."