Visible crew/equipment: When Brackett tells the orderlies to take the stock broker to the CCU and they tend to him, an actor's T-mark is visible under the gurney while it's still propped up, just before Dixie stands on that spot.
How Green Was My Thumb? - S3-E17
Visible crew/equipment: After Roy and Johnny visit Mrs. Johnson at Rampart, there are three actors' tape marks visible on the floor when they walk past the nurses' station, just before Brackett, Chaplain Miller and Early stand at their marks.
Visible crew/equipment: During the boating accident rescue, the outlines of the mic transmitters and wires are visible on the backs of both Johnny's and Roy's shirts, on their right sides.
Revealing mistake: When Johnny and Roy are in the squad heading to Rampart after freeing the girl's toe from the bathtub, they get dispatched to 'possible electrocution' and we can see the white tape with "Kevin" inside Roy's helmet. (00:37:30)
How Green Was My Thumb? - S3-E17
Revealing mistake: When Roy brings the man with a laryngeal obstruction into the ER and is taken quickly to treatment 1, his head is tilted back and Early places a laryngoscope into the patient's mouth and says that he sees the obstruction. The problem is that we can see that the laryngoscope is actually at the side of the patient's face. Then, when Early uses the forceps to remove the obstruction, once again we can see that it does not go into the patient's mouth.
Continuity mistake: When Roy and Johnny are on the roof with Harriet, we can see the shadow being cast by the utility pole on the street down below, and when the police car shows up moments later that shadow has changed significantly. (00:12:40)
Visible crew/equipment: During the structure fire, when Captain Stanley uses the HT and says "Engine 17, you can pump to Engine 51," in the next shot a second cameraman carrying a handheld camera is visible between Engine 17 and Engine 9, as he's shooting footage. He's visible again three shots later, standing beside Engine 17, and once again right after they lower the ladder through the hole in the roof.
Revealing mistake: At the start of the episode, in the closeup shot of Chet, Roy, and Johnny as they're talking about their trip, we can see the Land Rover hood's base plate where the vehicle's spare tire is supposed to be mounted, but the tire isn't there because of the mounted camera facing the actors in the vehicle. In other shots the spare tire is properly mounted on the Land Rover's hood.
Continuity mistake: When Johnny and Roy are on the "child locked in a bathroom" run, Johnny makes a hasty retreat leaving Roy to deal with the "child." The bar of soap Roy uses is on a curved pedestal soap dish, and that dish is either curved towards the wall, or turned the opposite way, depending on the camera angle.
Answer: It is standard practice to wet down driveways so that they stand out in a long shot.
stiiggy