during pre launch in-cabin video, one crew member appeared to be "signing" (spel... | Hacker News

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greypowerOz on May 30, 2020 | parent | context | favorite | on: SpaceX successfully launches two humans into orbit

during pre launch in-cabin video, one crew member appeared to be "signing" (spelling out stuff) with his left hand (?)

Does anyone have a back story on that?

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