Visible crew/equipment: After Squad 51 is dispatched to a "man locked in a safe", when Johnny exits the squad and later when he gets back in, the outline of the lav mic transmitter is visible on the back of his shirt.
Visible crew/equipment: On scene at the two vehicle accident, when Roy and Johnny are tending to the teenagers in the overturned car, the outlines of the mic transmitters and wires are visible on the sides of their shirts.
Visible crew/equipment: When Johnny is in the ambulance with the boy who ingested poison, the shadow of the cameraman holding the handheld camera is visible on Johnny as he sits beside the stretcher.
Visible crew/equipment: When the boy who ingested ant poison is being wheeled into treatment 3, in the shot from the hallway we can see the electrical cord and plug lying across the floor, but in the next shot from inside treatment 3, that cord has vanished.
Visible crew/equipment: After Station 51 responds to the unknown type rescue, Engine 51 leaves on another run, but when Johnny and Roy go into the house with the wife of the man who lost his voice temporarily due to the dieffenbachia plant, the bulging outline of the lavalier mic transmitter and wire are visible on the back of her white robe.
Visible crew/equipment: After Station 51 is dispatched to the bulldozer accident, just before Engine 51 comes to a stop at the junkyard there's a shot from the perspective of Engine 51's roof, with the Beacon Ray dome light in front, and on the light's red and chrome surface we can see the reflection of the camera mounted on the roof behind the dome light.
Visible crew/equipment: After the boy who ingested the ant poison is loaded onto the ambulance, when the back doors are shut, the reflection of the location set lighting is visible in the ambulance window and on its surface.
Visible crew/equipment: After Johnny carries Cindy down from the treehouse, when Cindy's mother joins them, the bulging outline of the lavalier mic transmitter is visible on the back of her white sweater.
Visible crew/equipment: When Roy and Johnny get to the gas station, Captain Stanley tells them to look at the owner of the station, and when the owner leans over and places the nozzle back on the pump, the outlines of the mic transmitter and wire are visible on the back of his shirt.
Visible crew/equipment: When Squad 51 is dispatched to 'person caught in a mailbox', have a look at the squad's license plates when it rolls up on scene. The plates read "70324H" which is the California commercial plate number for Squad 51, not the usual prop dept's license plate "E999007." It was the prop dept's responsibility to change from the commercial plate to the prop plate, but this scene slipped by them. It's also interesting to notice that this scene takes place at a real intersection up the block from Universal Studios, which is the direction Squad 51 came from. Note the "Black Tower/MCA Tower" in the background, which houses Universal's executive offices.
Visible crew/equipment: After Station 51 is dispatched to the fire at the refinery, when they reach the refinery and make a right turn the view is from atop Squad 51's roof, and the reflection of the covered camera and part of the cameraman's head are visible in the squad's lightbar.
Visible crew/equipment: At the refinery fire, after the stokes is loaded onto the snorkel and then John and Roy climb in, two shots after Captain Stanley's closeup, in the shot tilting up at the descending snorkel basket, a crew member who is crouching down can be seen on the tower behind it (presumably it's the second cameraman shooting all the footage from that angle).
Visible crew/equipment: When Squad 51 is dispatched to the "possible heart attack," just as the squad rolls up on scene, we can see its real license plate with number 70324H, instead of the prop plate number E999007.
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.
How Green Was My Thumb? - S3-E17
Visible crew/equipment: Just as Roy opens the door to Mrs. Johnson's apartment and he and Johnny walk in, the shadow of production equipment (looks like a reflector screen on a tripod) is visible on the wall behind them.
How Green Was My Thumb? - S3-E17
Visible crew/equipment: When Johnny follows the nurse as she gets off the elevator on the fourth floor, the outlines of the mic transmitter and wire are visible on the back of the nurse's white uniform.
How Green Was My Thumb? - S3-E17
Visible crew/equipment: When John and Roy are searching for the missing man during the fire at the winery, a flaming piece of debris falls in front of Roy. When Roy climbs up to the deck above him, it cuts to Roy on his knees about to stand up, and we can see someone moving right near him, at the left of the screen, even though he's alone.
How Green Was My Thumb? - S3-E17
Visible crew/equipment: After Johnny rescues the man from the wine vat, when he and Roy lay the man down on the ground near the squad, the outlines of the lavalier mic transmitter and wire are visible on the back of Johnny's shirt.
How Green Was My Thumb? - S3-E17
Visible crew/equipment: When Johnny and Roy stop by Mrs. Johnson's home to water her plants, two actors' tape marks are visible on the floor by the door.
Visible crew/equipment: After Captain Stanley's clam chowder lunch, the tones drop for the unknown type rescue, and when Cap hands Roy the piece of paper with the location, the reflection of a female crew member is visible on Squad 51's vent window, beside Roy.
Answer: I believe you are speaking of the old man, Mr. Wilson. He's played by J. Pat O'Malley.
Bishop73
Correct, it was J. Pat O'Malley...he also played the grandfather with his grandson when their rocket exploded, and also played "Old Bill" in the episode with Ann Prentiss, where Gage saves the little girl from the burning tree house, and her mother falls in love with him.