Other mistake: As they travail to The Pentagon in Washington, Carol and Dr. Marvin sit in the exact same mock-up of an airplane's interior that we saw earlier in the movie when a UFO passes in front of it. (00:00:45 - 00:27:00)
Earth vs. the Flying Saucers (1956)
1 other mistake
Directed by: Fred F. Sears
Starring: Hugh Marlowe, Donald Curtis, Joan Taylor, Morris Ankrum
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)
Gen. Edmunds: When an armed and threatening power lands uninvited in our capitol, we don't meet him with tea and cookies.
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.