Visible crew/equipment: On the beach there's a battle charge, and in the foreground you can clearly see a set of tyre tracks from the camera vehicle preceding the charge.
Visible crew/equipment: When the five men are going up the mountain, a crew member is seen beside a big rock, at the bottom left of the screen. (00:33:50)
Visible crew/equipment: During the scene when Cliff's girlfriend is walking down a street singing, if you look carefully there is a gap between two of the buildings through which you can see the scaffolding holding the set up.
Visible crew/equipment: When John Wayne is on the wagon and the Comancheros are leading them to the secret hideout, for a split second in the background, a large truck and a trailer that seems to be camouflaged in the background are visible.
Visible crew/equipment: When William Shatner's character first enters the classroom, the boom mike is hanging completely into the frame at the top of the screen, and can be seen sweeping to the left as the students take their seats. (This is visible in both aired-on-TV and DVD versions.). (00:12:15)
Visible crew/equipment: Just before Paul sits down on the box in front of Holly to show her the book commission that he had just earned, a microphone flashes into view on the right side of the screen. (01:07:30)
Visible crew/equipment: While approaching the two test pilots in the hanger, the shadow of the camera can be seen on the lockers. (01:31:00)
Visible crew/equipment: As the man walks down the corridor, before being asked for a match, on the left wall there is a shadow of the boom, and briefly the sound man holding it. (00:16:25)