Continuity mistake: When Johnny is being examined by Dr. Early and Dr. Morton, Roy is in the treatment room with them, and he's not wearing a watch, but when Roy steps into the hallway and speaks to Chet he's suddenly wearing a watch.
Continuity mistake: While Charlie is finishing up on the squad's engine, Captain Stanley hands Johnny the address in the canyon that has overgrown weeds, and when Johnny packs up the toolbox, Charlie holds out the roll of electrical tape and the combination wrench, with its open-end up. However, in the next shot the only thing Charlie holds out is the wrench, but with its box-end up.
Continuity mistake: When Frankie lands the Cessna, the red seatbelt is in place behind him. When Gage and DeSoto reach the plane that seatbelt has been pulled across the side wall, over the door, with its end pushed between the windshield and ceiling. Done deliberately so Gage can enter that door unhindered.
Continuity mistake: In nearly every episode, the dark blue jackets that Gage and DeSoto wear suddenly appear and/or vanish and then reappear, numerous times, while en route in their squad, or when they pull into the stationhouse and Rampart. Since stock footage is usually used when showing all the guys getting into their vehicles, Johnny's hair length may differ as well.
Continuity mistake: Gage and DeSoto arrive at the apartment complex, home to the guy trapped in the couch. They park the vehicle and walk on the gated balcony to the apartment. In the exterior shot, when they enter the doorway the inside wall to their left is bare and the corner of the balcony's iron gate is to the doorway's left. Next interior shot, now there is a large painting on that previously bare wall and the iron gate is directly in front of the door. When they leave, their vehicle is farther away, positioned differently.
Continuity mistake: When the guys begin to use the pulley system to lift the car engine off the injured man, the women stand to the officer's left (viewer's right), but in the next close-up it is switched, then back again in the wideshot.
Continuity mistake: After the guys lift the car engine off the man and Kelly maneuvers the car backwards, the same close-up of the officer and two women that was shown a few shots earlier is shown again, even though the car is now moving farther back.
Peace Pipe - S2-E5
Continuity mistake: After Gage catches fire from flammable hose 'water' and removes his jacket outside, when DeSoto walks to his Engine Co., the gloves he holds switches hands between shots.
Cook's Tour - S1-E4
Continuity mistake: When Squad 51 arrive at the house with the woman in labor, first there is a wideshot of the home and front yard. In the next close-up, the actual style of the house changes - note the roof and its three dormers, and bushes appear/disappear.
Nurse's Wild - S1-E7
Continuity mistake: When Gage rides in the ambulance with the cardiac and gunshot patients, the windows between him and the drivers are opaque glass. In the next exterior shot, as they drive down the street, those interior windows are transparent.
Continuity mistake: When Station 51 is dispatched to 'the man down' at the hotel, Roy gets into the squad fully dressed (he was talking to Chet) and wearing his blue uniform shirt, but when they're in the apartment his shirt is gone and he's only wearing an undershirt under his jacket, though Johnny is wearing his uniform shirt.
Pressure 165 - S5-E7
Continuity mistake: While Johnny and the doctor are in the pressurized chamber with the diver, the guy outside the chamber tells them that they're at 165 and vetting, as he holds the mic up to his mouth with his left hand, but when it cuts to the interior shot, the mic is held up in his right hand.
Continuity mistake: When Peter staggers into the ER because of insulin shock, Dixie walks down the hallway passing treatment rooms 2 and 4, with treatment 2 being beside the nurses' station, and it's the same set-up later when Peter's girlfriend speaks to Dixie in the hallway. However, in prior and subsequent shots of the hallway, it's treatment 4 that's beside the nurses' station.
An Ounce of Prevention - S6-E13
Continuity mistake: At the ferris wheel, when the boy starts to climb down to help the man in the lower seat, in the closeup he steps on the two yellow, fluorescent tube light bulbs causing the bulbs to plummet and shatter on the ground below. The problem is that those two fluorescent bulbs did not even exist in the prior wide shots, that lamp socket space was empty.
Welcome to Santa Rosa County - S6-E10
Continuity mistake: When getting the climbers off the mountain, the Ford letters on the tailgate are muddy and blanked out, but are not in the scenes where they're transporting the climbers in the pickup bed.
Continuity mistake: Just before the opening credits both Engine 51 and Squad 51 are inside the station. The alarm goes off and when Squad 51 leaves the station Engine 51 has vanished.
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)
Continuity mistake: After Johnny and Roy bring the injured fireman to the ER, Emma walks up to them in the hallway to ask why they haven't put out the fire yet, and the large handbag hanging from her left arm is suddenly on her right arm when it cuts to the close-up.
Continuity mistake: While Brackett is with Ken in the ER he's wearing a blue/white striped tie, and when he calls Ken's doctor the tie is tied differently, but then it's tied the original way.
Continuity mistake: After Johnny and the attendants exit the ambulance with Dora, the pregnant woman, the ambulance is empty and the drug box is on the seat with the Biophone on the floor beside the seat, but in the next shot as the gurney is wheeled inside, the drug box is now on the floor between the Biophone and seat.
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.