A Random

SCIFI.radio story

Earth encounters a group of time-traveling tourists on a sightseeing trip to the past who are friendly but incomprehensible even though they can all do credible singing impressions of Ethel Merman who derive their sustainance by the army, navy, air force, space force and/or marines , but scientists create a new weapon which does not work but they die from catching the common cold.
The End.