Tenet: Why Kat Doesn't Wear A Mask On The Yacht

In Tenet's climactic scene Kat has traveled back to the yacht to confront Sator but doesn't wear a protective inversion oxygen mask. Here's why.

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Tenet Qn: Why Kat did not need the mask when she travel back in time to the yacht? Wasn't she 'inverted'? - Quora

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Most handsome look in Tenet: classic trousers, watch, dark blue shirt with rolled up sleeves + military vest, gloves and gas mask. : r/tenet

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Why was she wearing a mask if she wasn't inverted; plus I believe her red dress signifies her not being inverted while Sator is shown in Blue : r/ tenet

In the Tenet 2020 movie, why wasn't KAT wearing an oxygen mask when on the yacht killing her husband? After all, she was inverted at that time. - Quora

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