[21twelve]

PAPR: Powered Air Purifying Respirators

They do not have their own air supply (say from a tank) - but they run the room air through a filter using a pump from the back. The pump helps to create a positive pressure inside the hood to keep the virus from getting into the hood, but it isn’t a true pressurized system. The filters are much better than the N95 masks. You can use different types of filters, not sure how small of a particle they go down to.

I’m guessing that the pump and noise air is part of the problem with being able to hear. I’m hoping that they have teams of folks that have worked together for awhile and know their stuff. I used to work for two carpenters - they would work together and could go an entire day practically without saying a word to each other!

[RummyChick]

Longtime American Airlines flight attendant dies while awaiting results of coronavirus test - as colleagues fear for their lives over lack of social distancing on flights

https://www.dailymail.co.uk/news/article-8161401/Longtime-American-Airlines-flight-attendant-dies-awaiting-results-coronavirus-test.html

[LilFarmer]

Thanks for the explanation

[metmom]

Time to learn sign language.