This classic episode opens with an old woman, played by Agnes Moorehead, living alone in a rudimentary shack and speaking not a word. Soon surprised by tiny, hostile intruders who disembark from a wee flying saucer, she fights them, killing one. When she follows the other back to his ship, we’re surprised to hear him warning his fellow ETs in English. Then we see it (spoiler alert): the side of the ship reads “U.S. Air Force.”