Tony's hum was barely audible over the staccato tap of his fingers on the desktop then, less of the rolling rhythm that was his restless focus than a driving impatience as he tried to pin down hints of what was being hidden. Some indication of when those structures under the water had been built, and when they had been submerged. To Enide, he pushed, "Keep going. The year they moved onto the ship. The one before that."