Footage shows a young woman, dressed in a uniform, who is sitting at a desk and operating a group of telephones during the '70s. 

She also appears to be relaying phone calls. On one call, she writes a series of notes on a yellow notepad. Her phone voice is clear, no-nonsense, and professional. 

She further appears to be monitoring an entrance, perhaps for vehicles, which she can open. A van passes outside the window to her right.