If possible, try to avoid pushing each other over the edge, as that would cause me extra paperwork.” The coach opened the doors, and they all stepped outside. The Grand Canyon spread before them, live and in person. Extending over the edge was a horseshoe-shaped walkway made of glass, so you could see right through it. “Man,” Leo said. “That’s pretty wicked.” Jason had to agree. Despite his amnesia and his feeling that he didn’t belong there, he couldn’t help being impressed. The canyon was bigger and wider than you could appreciate from a picture. They were up so high that birds circled below their feet. Five hundred feet down, a river snaked along the canyon floor. Banks of storm clouds had moved overhead while they’d been inside, casting shadows like angry faces across the cliffs. As far as Jason could see in any direction, red and gray ravines cut through the desert like some crazy god had taken a knife to it. Jason got a piercing pain behind his eyes. Crazy gods ... Where had he come up with that idea? He felt like he’d gotten close to something important—something he should know about. He also got the unmistakable feeling he was in danger. “You all right?” Leo asked. “You’re not going to throw up over the side, are you? ’Cause I should ’ve brought my camera.” Jason grabbed the railing. He was shivering and sweaty, but it had nothing to do with heights. He blinked, and the pain behind his eyes subsided. “I’m fine,” he managed. “Just a headache.” Thunder…