He perches in the water, jittery enough for parents to none-too-subtly yank away their children who had splashed by his feet. He has been too afraid to duck under the water for relief, because what if that is when he arrives, and, not seeing Jack, turns and walks away.

Though, if he doesn't remember, if only Jack has retained memories of almost, Jack might just plummet under and stay.

The sun blinds him for a millisecond, and that arm wraps around his chest, "Hey Doc" whispered in his reddened ear, and he tackles Sawyer into the water with his embrace, Sawyer laughing "It worked" into his finally lips.