Tom watched the water swirl down away from him as the tank emptied. He spit out the mouthpiece and breathed a sigh of relief. He wondered if all this tank stuff was worth the trouble. Ronson's people had been working the tracks for months and never needed the radiation flush. They seemed just fine. He wasn't about to get into it with Ellie though, she'd probably go into some scientific argument and something about statistics and experiments. It was better just to keep quiet and do ...