Question: Which of the films that Matt Villa's has worked on is based on a short story by Robert A. Heinlein?
Sentence (from "Free Men"): It is copyrighted by Heinlein in 1966, but was probably written between 1947 and 1950, judging from the foreword to it in "Expanded Universe", which mentions that it was written after "Rocket Ship Galileo".
Relevant evidence: No