The USA Today Network got a peek inside to learn about the crew that keeps alive this vital piece of the Sin City experience. Welcome to our new and improved comments, which are for subscribers only. This is a test to see whether we can improve the experience for you. You do not need a Facebook profile to participate. You will need to register before adding a comment. Typed comments will be lost if you are not logged in. Please be polite. It’s OK to disagree with someone’s ideas, but personal attacks, insults, threats, hate speech, advocating violence and other violations can result in a ban. If you see comments in violation of our community guidelines, please report them. At this iconic stop along the Las Vegas Strip, there’s much more to see under the surface. Reno Gazette Journal Gear grease and layers of strong sunblock cover the workers in this unseen section of the Las Vegas resort. On the job, some wear protective eye goggles and gloves, repairing circuit boards or sandblasting barnacles growing on the arms of machines built to shoot water streams 25 stories in the air.  Others slip into wet suits and sink into the 22 million gallons of water in a manma...