Layla Sarakalo was the woman who answers Uhura and Chekov when they are looking for the "nuclear vessels" in
Star Trek IV: The Voyage Home (1986). She was an extra who was not supposed to speak. Layla Sarakalo had never acted before and was told to "act naturally". So when she was asked, she improvised an answer. Much to Sarakalo's surprise, her unscripted line was kept in the film.
