Looks like equipment that would be used in an asbestos removal. Suck lots of air through the filters at the end of those tubes. Keeps a negative pressure in the building, so any leaks will result in air coming in, none going out of the building. That way, the filter trucks will capture any asbestos or other unwanted dust that gets disturbed and goes airborne.
I did stay at a Holiday Inn Express once.
The groundskeeper? The Presidential photographer (who is almost always with the President)? https://www.kennedy-center.org/education/resources-for-educators/classroom-resources/media-and-interactives/media/media-arts/picturing-the-presidency/
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A few years ago, a woman in NYC had taken her two pits for their business. She had owned them since birth. They mauled her to death on the landing of her apartment while she was unlocking the apartment door.
Would you want pups bred from these two around your kids?
Can you elaborate on how Rex Sinquefield would be involved? I only know him as an index fund innovator.