In the last scene in the diner, Jessica and Eve Simpson are sitting at a table with the counter right behind Eve. You see a man in a beige suit sit down at the counter. Then the camera pans to Ben Wright (Lyle Waggoner) walking into the diner and man in the beige suit is right behind him and no one is sitting at the counter behind Eve. The man then sits down at the counter.
In the final scene in the restaurant, the man who introduces himself to Eve says, "Mr. Wright." The camera turns to Eve as she says, "Of course, I should have known" and at the same time she reaches out and you see her shake his hand. The camera point returns to the man adding "Ben Wright" and only then does he extend his arm to shake Eve's hand.
At 29 minutes, while in the Sherriff's office, the camera pans up and it is revealed that the building does not have a ceiling (or roof), just the top of the wall and then black space.
The circuit board Sheriff Metzger removed from the drum was not a missile guidance part but rather a convergence board from an RCA projection television set.