There were a couple of things that my uneducated eyes noticed. First, I saw two machines come out of the back of that trucklet. I saw no hot water heater, so where does the steam come in. Then of course the PPE's for the guy mixing the chems. HUGE no no. Then, I thought that they just moght possibly be some secret brew that was innocuous to everything except grease, but at teh end of the video the poor schmuck that was hand wiping the back part of the hood was holding his nose as he did it. The third thing, was the ethnicity and appearance of the crew, the hair styles are not from around these parts, if you know what I mean. Something tells me that these fine peopel would not be able to get a security clearance to clean any government installations.
Scott