The Wedsworth-Townsend Act - S1-E1
Visible crew/equipment: When Station 10 is dispatched to the factory fire, a few shots after the closeup of 105's door that reads "fire dept deluge", there's an overhead long shot of the men using the hoses against the fires in the doorways, and a cameraman wearing blue, holding a handheld camera, is visible sitting at the back of a squad.
The Wedsworth-Townsend Act - S1-E1
Visible crew/equipment: As the camera pans to the left at the start of this episode, while everyone is asleep in the dorm upstairs, a crew member standing near the production's lighting equipment is visible between Squad 10 and the wall. Also note that the lighting equipment is gone when the guys are dispatched.
The Wedsworth-Townsend Act - S1-E1
Visible crew/equipment: During the factory fire, the Battalion Chief tells dispatch over the HT, "Fire through the roof, send me a third alarm," then in the next shot we see Engine 36 arrive, and when the engine comes to a full stop we can see two tripod lighting rigs and stacked film canisters, at the right of the screen.
Visible crew/equipment: On scene at the traffic accident with Paula, after Johnny brings the IV bottle to Roy, it cuts to the overhead shot of the ambulance arriving, and a large reflector screen is visible at the left of the screen.
Cook's Tour - S1-E4
Visible crew/equipment: At the construction site, when Johnny and Roy climb the tower mast, they stop on the blue platform with the crane operator's cab before continuing up to the main jib. When Roy, Johnny, and the man they rescue walk back across the jib the man slips, and there are a few shots showing the underside of the blue platform, and we can see people moving around on that platform overhead. There should only be four people on the tower crane: Roy, Johnny, the man they rescue, and the officer holding the bullhorn, who's standing at the other end of the jib, by the mast. Nobody is supposed to be on that platform.
Cook's Tour - S1-E4
Visible crew/equipment: At the construction site, when Roy and Johnny walk across the tower crane's main jib, there's a shot of the entire top of the crane, and we can see the cameraman at the tower peak, who is shooting the footage of the stunt guys from the overhead angle. He wasn't in the previous long shot of the crane. This does not refer to the officer who is standing on the main jib.
Visible crew/equipment: While Roy and John are on scene with the "car over cliff" Johnny heads down to the car too quickly, and when he ends up falling his mic transmitter and cable slip out from their hidden area, and become visible on the front of his shirt.
Visible crew/equipment: After the man with trichloroethylene poisoning is hosed down and loaded onto the ambulance, while Roy's on the Biophone with Rampart, John's uniform jacket is pulled open with his hands on his hips, and we can see the outline of his mic transmitter in his shirt pocket with the wires coming out of the pocket.
Visible crew/equipment: At Rampart, when Brackett walks over to Roy to speak with him about the birth of another baby, the actor's black tape mark is visible on the floor, just before Brackett stands there.
The Wedsworth-Townsend Act - S1-E1
Visible crew/equipment: When Dixie and Johnny are at the overturned car at the cliff, Dixie opens the car door and goes inside, and as the camera trucks to the right we can see a crew member, wearing a rust-colored shirt, reflected in the shiny bumper.
The Wedsworth-Townsend Act - S1-E1
Visible crew/equipment: During the factory fire, after the Battalion Chief tells 127 over the HT, "Take the steamer hydrant at Fifth and Crocker, lay a three-and-a-half down the driveway..." three shots later there's a closeup of a spraying hose, and we can see in the background another cameraman and crew member shooting footage with a handheld.
Visible crew/equipment: At the scene of Paula's traffic accident, after the ambulance leaves with Johnny and Paula inside, Roy pushes the back of the driver's seat forward revealing Bonnie in the back seat. When it cuts to the next shot, the reflection of a crew member leaning forward is visible in the car's window, and the mic is also visible on the left. Additionally, Johnny is visible in the background, even though he just left in the ambulance with the victim, as the actor who portrays him, Randolph Mantooth, is casually leaning on a sign post waiting around during the location shoot.
Visible crew/equipment: During the rescue at the construction accident, when the man with the back injury is hanging from his line and is lowered after Roy untangles the block, we can see that in addition to the rope wrapped around the man there's wire and support that go under the man's jumpsuit. The wire/support are gone once he's lying on the balcony and they remove the rope.
Visible crew/equipment: During Squad 51's rescue of the hunter who was injured on the cliff, in the closeups of Copter 10's pilot, at the right upper corner of the screen above the windshield, we can see the edge of the white screen used to block the view through the windshield.
Visible crew/equipment: When Roy and Johnny are with the teenage girl who OD'd, Roy walks over to the bystanders, and when he speaks to the mother and daughter, the perpendicular actors' marks are visible on the ground where they stand.
Visible crew/equipment: When the babysitter runs into Rampart carrying the boy, both Dixie and Brackett are standing at the nurses' station talking and an actor's white T-mark is visible at Dixie's feet.
Visible crew/equipment: Just as Dixie lets the unconscious teenager's parents walk into the ER treatment room, the actor's T-mark is visible on the floor behind Gage's legs, a moment before Brackett stands at the mark.
Visible crew/equipment: When Early and Brackett try to deal with the elderly group who want to see their friend, as the group walk away toward the waiting room, two actors' T-marks are visible on the floor, one of them is at Dixie's feet, the other beside her.
Visible crew/equipment: When Brackett and Early are in Rampart's staff lounge discussing J.P. Dumont, Brackett agrees to let Early use his charm in the case, and when Early stands up an actor's small T-mark is visible on the floor, where Brackett was standing moments earlier.
Nurse's Wild - S1-E7
Visible crew/equipment: After rescuing the man trapped at the chemical plant, DeSoto and Gage walk into Rampart and when Gage walks up the hallway with Ellen, the actor's black tape mark is visible on the floor, where Gage stops to flirt with the nurse.
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.