A few years ago I heard from a Miami real estate agent that the Russian mob controlled much of the real estate in Miami Dade.
This is only speculation— but I wouldn’t be surprised if the construction of some buildings had corners cut with substandard materials or shoddily designed structures.
Perhaps so, but this engineer mentioning this being more typical of imploding a building was what I find of interest. Was this the false flag event to take attention off AZ audit?