The document provides information about security, water and waste management, tourism and hospitality, transport, energy management, disaster relief, and green building in Sunny City. It describes the three lines of defense for the city which include the police department (SCPD), police coast guard, and airforce. It also discusses the city's underground water storage system, underwater hotel, floating school, and green park towers for tourism. Maglev transportation, urban transport pods, and solar-electric airships are mentioned for transport. Emergency response vehicles and overnight shelters are part of the disaster relief system. Green buildings utilize solar boards and capsule rooms with recycling systems.