Visible crew/equipment: You can see a modern high voltage power tower on the mountain in the background while they are lining up for inspection. (00:08:00)
A Horse of Another Color - S2-E21
Continuity mistake: After the Captain and Corporal get out of the cave, they see the Sarge and Jane have ropes on Black Devil. He gets away with their ropes around his neck. He peeks around the rock, and the ropes are suddenly gone. The mare comes after with a rope on her neck that also disappears magically between angles.
Carpetbagging, Anyone? - S2-E28
Visible crew/equipment: In the opening sequence, when troopers Stanley and Livingstone are heading towards the Captain's office, shadows of a production light and a boom mike and operator are seen on the ground.