The Twilight Zone
episode, "The Invaders," aired January 27, 1961.
Episode Synopsis: A woman
goes up to her roof to investigate a noise,
and finds a flying saucer with two tiny, robot-like creatures
it. The creatures torment the woman, until finally she grabs and
batters one of the creatures into lifelessness. With an ax she
destroys the saucer. Before the final creature is killed he sends
a message to his
home planet not to send any more ships to this planet.
The lettering on the side of the saucer reads "U.S. Air Force".