They did get it at Radio Shack

My family was living in Big Spring, Texas during the late 70's when this movie was being filmed there. My Dad worked at Radio Shack and he says that crews from the movie came to his store and bought various lights for special effects. There is a line in the movie while the scientists are inside the UFO where they say "I'll tell you one thing, they didn't get this at Radio Shack", well they actually did!