She led him past the engine room, which looked like a very dangerous, mechanized jungle gym, with pipes and pistons and tubes jutting from a central bronze sphere. Cables resembling giant metal noodles snaked across the floor and ran up the walls. "How does that thing even work?" Percy asked. "No idea," Annabeth said. "And I'm the only one besides Leo who can operate it." "That's reassuring." "It should be fine. It's only threatened to blow up once." "You're kidding, I hope." She smiled. "Come on. - Rick Riordan