'Racking on' is a fire service term to describe a structure that has a way out of control fire, like the one in the 140 meters tall Chechen skyscraper. The fire started on Wednesday and was not extinguished until Thursday.
That building is nearly as tall as WTC 7, which had a fraction of the Grozny fire, yet WTC 7 somehow managed to fall down into it's own footprint. Good thing 'Lucky Larry' didn't own the Chechen skyscraper or else it would have mysteriously self-destructed.
Amazing, isn't it? No melting steel, no pulverized concrete, no massive pyroclastic clouds of smoke and debris from horizon to horizon.
Contrast the above video with this one of WTC 7.
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