Visible crew/equipment: When Johnny and Roy are leaning on the old fire engine talking about how it's not just some old car, and then when Johnny bends over and lays the mechanic's creeper on the ground, the outlines of the mic transmitter and wire are visible on the back of Johnny's shirt.
Visible crew/equipment: When Engine 51 arrives at the scrap yard fire, just before Captain Stanley opens his door and steps out in the closeup, the reflection of a crew member/cameraman, wearing a white, short-sleeved shirt is visible on the engine's red surface.
Visible crew/equipment: When Roy and Johnny are with Dixie, they see the new unit and scanner at the base station, and when Roy walks over to it, the actor's white tape mark is visible on the floor where he stands.
Visible crew/equipment: When Johnny chases Harriet down the street, behind Johnny we see Roy backing up the squad to follow them, with nobody around, then when it cuts to the view from within the squad, the reflection of crew is visible in the driver's side mirror.
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.
Visible crew/equipment: At the structure fire, when Squad 51 stops at the hydrant to lay the dual lines, as Engine 51 drives past the squad, the reflections of array lighting and the reflector screen are briefly visible. Then when Engine 51 rolls up to the fire, as Captain Stanley tells dispatch to send a second alarm and approach from the west, we can see the reflection of a crew member wearing a long sleeved white shirt and dark slacks, in the window behind Captain Stanley. He's still visible when Squad 51 pulls up alongside Engine 51, and also when Cap tells Engine 9 to lay duals.
Visible crew/equipment: During the structure fire, in the shot after Johnny runs up the ladder to the roof to get to Captain Harmell, a crouching crew member can be seen under the open passenger side door of Engine 17.
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.
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.