The CycloTech Cat 5 Atmospheric Scrubber will remove all harmful particulates from the air, leaving the environment clean and fresh. At least that's what the brochure said. Some people question whether the dilapidated mechanisms are removing anything since their filters have probably never been changed in all the years they've been hovering up there. And many suspect that those enormous thrusters put out more pollution than the machines could ever scrub from the atmosphere. Others warn that one day some critical mechanical failure will cause these old gadgets to come crashing down on the city below. But everyone agrees that one of these contraptions would make an excellent setting for the hero and the villain to stage their final battle.