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.
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: When Roy and John are at the inexperienced cook's apartment the second time, when her fingers are caught in the mixer, she's wearing a blue/white striped dress and a watch on her left wrist, but in the closeup as she reaches for the boiling pot her watch is gone and it's a white sleeve on her arm.
School Days - S2-E14
Continuity mistake: Before the housekeeper leaves the library to open the door for 51's guys, we see Dr. Temple pinned under the bookcase and two red armchairs in front of the fireplace, but when she returns to the room with everyone following her one of those armchairs has vanished.
Continuity mistake: After 51's guys rescue the man from under the fallen engine, when the ambulance leaves we can see only the name Mayfair is printed on its side, but en route to Rampart and when Roy has the ambulance stop and then go, there's a red cross printed on the surface above Mayfair.
Continuity mistake: During the structure fire, after the parents realize their son ran back into the burning house to get the dog, when the father tries to go after the boy we can see the man's wearing a striped T-shirt under his robe, but when Roy rescues both the boy and the dog, the father is now wearing a white T-shirt under the robe.
Continuity mistake: When Mrs. Epps begs Dr. Morton to tell her the truth about her son's condition, the stethoscope is hanging around Morton's neck with the headset on his left side and the chestpiece on his right side, but then it flips to the opposite way, and then back again, between shots.
Continuity mistake: When Roy and Johnny are at the construction site with the guy who wants to jump, before Roy walks over to him we see the pompier belt around Johnny's waist has the carabiner hook to his left and the double tongue buckles to his right. Then when Captain Stanley tells Johnny to try and get to the guy from the other side, Johnny's belt is now around his waist the opposite way. In the following shots his life belt flips around a couple more times. Note that their pompier belts have at one side double leather straps which are the two tongue buckles, and the other side has a single strap of leather for the attached carabiner hook.
Continuity mistake: When Squad 51 and then Engine 51 are dispatched to the hotel fire, before going in Johnny's SCBA cylinder has a large arrow sticker and Roy's has a large red sticker, but once inside Roy's air cylinder goes back and forth from having an arrow sticker to the red sticker. Then in a few moments, when Marco and Chet go in with the stokes, both of their air cylinders are tall, flat-top and devoid of stickers, but inside their SCBA cylinders are short, round-top and keep switching from having either an arrow or large red stickers.
Continuity mistake: When Johnny and Roy are with the elderly man in the burning house, the window is pushed up fully when Mike climbs the ladder in the exterior shot, but when Mike breaks the window with the axe, the window is halfway down in the interior shot.
Peace Pipe - S2-E5
Continuity mistake: When Johnny and Roy are at the nurses' station telling Dixie about the girdle run, Squad 51 responds to the structure fire right up the street, and we see Roy and Johnny en route without the turnouts, but when they pull up to the house they're both wearing turnouts.
Peace Pipe - S2-E5
Continuity mistake: Treatment 4 is beside the nurses' station, as seen when Roy and John are with Debbie's parents, while the drunk driver is being wheeled through the double doors. Later, when Brackett suspects that Debbie's father is with the drunk, as he rushes to the drunk's room he goes through the double doors to get to the room, but while Brackett's in the room speaking to Debbie's father we can see treatment 4's door right behind Brackett, even though they're supposed to be in a completely different area.
Continuity mistake: At the movie studio, during the rescue of the stunt guy whose leg is trapped in the wagon, while both Roy and Johnny are standing in the water, they're wearing water-type boots with whitish, flat rubber soles.
Continuity mistake: When Johnny runs inside the burning house to get to Toby and his grandfather, he's wearing a distinctive SCBA tank on his back, but when Johnny's inside the house he's wearing a different tank. Additionally, when Roy takes the mother's pulse he's also wearing a tank, but when Johnny and Toby have come out his tank is different.
Continuity mistake: After Boot shows up for the first time at Station 51, when Chet scares him away, there is a turnout coat and helmet hanging on the hook near the radio receiver base station, but when the dispatcher transmits the tones, the turnout coat and helmet have vanished as Chet turns away.
Peace Pipe - S2-E5
Continuity mistake: After Roy and Johnny find the source of the fuel oil getting into the water supply, when they pull up behind the van, there are three barricades with flashers. The flasher on the sidewalk barricade flips from one side to the opposite side between shots.
Peace Pipe - S2-E5
Continuity mistake: When Johnny and Roy arrive at the apartment with the woman who can't breathe because of her new girdle, she hangs up the phone receiver with the cord across the base. In following shots the receiver is placed properly, and then the other way again.
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.