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this post was submitted on 19 Jul 2023
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Serious answer: it's an EPOS (Emergency Portable Oxygen System) It's a plastic bag you stick over your head. It's got a clear bit up front so you can see and a small oxygen tank in the back so you don't suffocate because you put a plastic bag on your head. It's used for crewmembers to be able to get to a place with system oxygen before passing out in the event of an emergency.