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.
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: After Roy, Johnny, and Chet find the victims of the vehicle accident, when Johnny checks on the boy's mother, the bulging outline of the mic transmitter is visible on the back, right side of Johnny's red shirt.
Visible crew/equipment: While Johnny and Roy are with the unconscious man who ate daffodil bulbs, when the officer asks the bystanders to move back, the outlines of the lav mic transmitter and wire are visible on the back of the officer's shirt, when he turns around.
Visible crew/equipment: During the structure fire, when Roy, Johnny and the security guard are in the upstairs room and Roy closes the doors, just as they start to walk toward the window, the moving shadow of the cameraman and camera are visible on the wall. The shadow is not moving in sync with the guys so we know it's not theirs.
Visible crew/equipment: When Johnny and Roy are with the woman who slipped down into an old abandoned well, the outlines of the lav mic transmitters are visible on the sides of their shirts - Johnny's at his left and Roy's at his right.
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.
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: 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.
The Promise - S3-E11
Visible crew/equipment: When Paula walks in the kitchen's back door holding the dog, in the overhead shot the actor's black tape mark is visible on the floor by her feet, which was not there when Johnny had first seen her.
Visible crew/equipment: When Engine 51 gets dispatched to their first run on the new Ward LaFrance engine, Captain Stanley tells Johnny and Roy to get their gear to go with them. When the paramedics go to the closet to get the turnout coats, the bulging outlines of the mic transmitters and wires are visible on the sides of their shirts before putting on the turnouts. The outline of Johnny's mic transmitter is also visible when he first walks over to the new engine.
Visible crew/equipment: When Roy and Johnny are in the basket with the man who was electrocuted, after they finally get the victim on the ground and surround him, the shadows of the cameraman/camera are visible mainly on Roy and Captain Stanley.
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.