““He appears to be pointing at a massive water tower, all hinkered down overlooking the river. 'That's an old one.' This ancient, dark metal thing. It looks like a shadow of itself. 'Wait for it,' John says. 'For what?' 'It.' A few minutes later, the sun slips behind the water tower. The effect is like a total solar eclipse, with the water tower blocking the sun. 'Whoa.' 'Thanks. I arranged that myself.””