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Visible crew/equipment: When Scott falls after getting hit by the three arrows, you can clearly see a long tube leading all the way up his leg which pumps the fake blood up to his shirt. (00:41:25)
Visible crew/equipment: Right when Chris is opening the refrigerator in the cabin, if you look closely behind him you can see a man walk up behind him, it's very brief but it must have been camera crew or somebody on set.
Answer: Just fiction. Based, if anything, on mere urban legend.
Phixius ★