Takei was practicing with the rapier, as he had taken a "crash course" in fencing over the weekend before they were going to shoot the scenes. Well, while he was going over the moves he was going to do while filming, James Doohan got curious about all the noise coming from behind a curtain, and decided to investigate. According to Takei, without warning, while he was practicing a thrust, Doohan stuck his nose in, and almost lost it. Afterward, Doohan ran away screaming, "Help....George just tried to kill me!"
I have seen the darkness in my soul and shine brighter for it.