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i'm by no means an expert, but my late uncle was stationed at el toro, in a helicopter squadron. when i was a kid, i'd go out with my mom and aunt to go watch my uncle's squadron land. it was drilled into my little skull that the tail rotors were a heinously bad thing and would slice you into tiny bits. having seen raiders of the lost ark, i avoided the entire back half of the helicopters even when they were motionless outside the hangar.