Wow! "LA skyscraper getting 'Sky-Slide' on 70th floor" | News, Weather, Sports, Breaking News | WWMT

Is that an open air slide,or totally enclosed? If its open air,expect some problems.
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I RAN UP THE STEPS OF THAT BUILDING several years ago (ymca contest)
http://wwmt.com/news/offbeat/la-skyscraper-getting-waterslide-on-70th-floor