The real-life "Night Crossing" took just twenty-eight minutes.
This movie was released three years after the real-life events of an escape by two families, by hot air balloon, from East Germany to West Germany.
Walt Disney Productions flew the two real-life families, who made the night crossing, to meet the actors who portrayed them in the film.
At the time the movie was released, the hot air balloon, used in the real-life night crossing, was being stored in an "Escape Museum" inside Checkpoint Charlie in West Berlin, Germany.