Visible crew/equipment: Dr. Marvin decides to try out his new improved magnetic interference unit on a real alien spaceship that shows up outside the Belmont lab. As the truck with the device on it pulls up you can see the reflection of the crew in its door. (00:51:50)
Earth vs. the Flying Saucers (1956)
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Directed by: Fred F. Sears
Starring: Hugh Marlowe, Donald Curtis, Joan Taylor, Morris Ankrum
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Dr. Russell Marvin: Both Carol and I are subject to the same atmospheric disturbances that may have affected other observers, but there is a qualitative difference, when you're a scientist.
Trivia: Paul Frees is the apparent "spokesperson" for the aliens. His voice is heard throughout the movie. He's also the voice visitors hear in "The Haunted Mansion" rides at the Disney parks.