Jack was illuminated in the natural light and it made the Doctor smile. There they were, saving the world. Doing what they did best. If he got what he was wishing, they'd never be anywhere but right here, right now. Because this was what he loved about them best. Never stopping, never staying still.

He loved Jack for this most of all.

He pulled out the sonic and pointed it at the darkness. A low rumble emanated from the depths.

"I think we've got a response," he said. He checked the readout on the side of the screwdriver. "Sonar reception. Something down there is listening. See if you can switch that device to reverse.""