@nocontexttrek Ah, the ol' manually operated #helicopter wipers, but activated by a switch! That was a big feature back then before true automatic wipers were introduced. You got someone clinging to the side of your #chopper ready to actuate the wiper arm when you flip the control.
(Watch closely in the film and you can see a production assistant's finger sneak into frame as they move the wiper for @georgetakei's reaction.)
Kirk: "I am from what, on your calendar, would be the late 23rd Century. I've come back in time to bring two humpback whales with me in an attempt to repopulate the species"
Gillian: "Well, why didn't you just say so? I mean, why all the coy disguises?"