Continuity mistake: While Roy, John, Brice, and Bob are standing at the nurses' station, there's a closeup of Brice's arm as he explains that he's checking his drug box, and the watch he's wearing in the closeup has a gold/silver metal link watchband, but Brice is wearing a different style watch, with leather straps and buckle.
Continuity mistake: After Brice completely ticks off John regarding the advisory committee while standing at the nurses' station, when John and Roy walk up the hallway to the receiving entrance Roy's not wearing his watch as he's carrying the drug box, but at receiving he's wearing his watch.
Continuity mistake: After Roy explains to Mrs. Evans that she shouldn't call them every time Simba runs off, when Chet finds Simba, Johnny holds him with his right hand behind the front legs and left hand under the tail, but closeup Johnny's hands are in the opposite positions.
Continuity mistake: When 51's guys are on the roof of the jail, Johnny sets up the red hose roller with a safety line on the roof edge between the two ladders, but when Roy climbs up the orange ladder to go over the edge, that hose roller with the safety line are not on the roof edge and can be seen still lying on the ground, then it reappears in place in the aerial shot. Additionally, when Roy goes over the roof to make his descent, there's a second silver hose roller at the base of the overhang, which was never actually placed there.
Continuity mistake: At the start of the USC game, after Johnny uses the Heimlich on the choking guy, when Roy asks him to take a deep breath Roy's left hand is on the man's chest, but in the next shot it is Roy's right hand that's on the man's chest.
Paper Work - S6-E11
Continuity mistake: When John's in the storm drain with the boy, in the closeups the water rushing from the broken hydrant has a very strong current, and Roy's holding the boy's head up out of the water, but in the wide shots the current is nearly calm, nowhere as intense as the closeups, and Roy's not holding the boy's head.
Captain Hook - S6-E8
Continuity mistake: During the police chopper rescue, three ropes are tied off onto Engine 51's eyes, and when Mike backs the engine up while the stokes carrying Frank is pulled up, in shots facing the engine the three lines are being pulled backwards simultaneously, but in the shots of Marco, the stokes, and the ground, only the line with the stokes is being pulled up, the other two ropes are lying on the ground completely still.
Continuity mistake: When Roy and John are helping Jeanine get her head unstuck from the table, Jeanine's braid is very loose and coming apart, but when her head is free and she jumps into her mother's arms, Jeanine's braid is braided properly.
Continuity mistake: While Roy and Johnny are at 86's treating everyone who is being brought in, when Johnny's on the Biophone with Brackett, in Brackett's closeups at the base station, we can see that the actor has a very swollen upper lip. When the officer who was hit by lightning is brought into the ER, Brackett's lip is much less swelled, and more the way it normally looks, but when Brackett is back at the base station, his upper lip is swelled up once again.
Continuity mistake: After the bookmaker has had the heart attack, when Captain Stanley bangs on his door, the bookie pulls one of the four telephones onto the floor, and when Roy walks in it ends up lying on the floor between the defibrillator and drug box, leaving three phones on the table. However, in the closeup, when Vince places all the phone receivers onto the bases, there are four phones on the table, plus a notepad suddenly appears on the table, and there are fewer cigarette butts in the ashtray.
Continuity mistake: When Charlie notices the scrapes on Squad 51's tire and complains that its drivers are messing with the squad's alignment, note that the scrapes' positions change twice, which means that the tire has rotated, even though the squad has not moved since the start of the scene when Chet walked over.
Continuity mistake: After Charlie checks the squad's engine, and replaces the adhesive bandage on the wire with proper tape, Charlie places the tape roll back into the tool box, but when John collects the rest of the tools lying around, Charlie gives him the role of tape, which is out again.
Continuity mistake: When Johnny and Roy are at the nurses' station talking to Brice and Belliveau about the paramedic advisory committee, both Roy's and Johnny's shirts are all smudged up from the last rescue they just brought in, but when Johnny and Roy head back to the squad their shirts are spotless.
Continuity mistake: After the paramedic teams are given their instructions before the start of the USC game, in the closeup the Trojan warrior is given his helmet and he has the sword on the saddle, but he does not have his shield when he turns to ride onto the field, yet in the next shot of the real-life recorded footage the Trojan warrior has the shield.
Continuity mistake: When John is putting the pompier belt around the waist of the man stuck up in the tree, he buckles it so the flap is going towards the man's right, but in the next shot as Chet climbs the ladder behind John, the life belt is around the man's waist the opposite way. Then, when John cuts the rope, the belt is back on the original way.
Fair Fight - S6-E5
Continuity mistake: At the structure fire, before Roy and Johnny go back through the window to look for the missing doctor, Johnny's and Roy's SCBA cylinders have no stickers, but when Johnny's cutting the door, his tank now has two white stickers and Roy's tank has one on the side, then when they're back outside the stickers are gone.
Fair Fight - S6-E5
Continuity mistake: When John and Roy get back to the station and the other guys tell them to check the dog to see if he's sick, in the shot facing the dog he's lying on the middle couch cushion, but in the shot facing the guys he's lying on the corner couch cushion.
Fair Fight - S6-E5
Continuity mistake: When Roy and Johnny get back to the station, after the cave-in rescue, the dog is lying on the couch on the middle cushion, between Mike and Marco, but in Henry's closeup Mike is gone, and the right side of the couch is empty, then Mike's back, but he vanishes and reappears again.
Continuity mistake: When dispatched to singles club fire, Engine 51 pulls into the parking lot, and there's a shot of Mike hooking up the supply line to the hydrant, with Marco at the side of the engine, but it cuts back to Engine 51 in the lot again, with Mike behind the wheel and Marco sitting in the jump seat, and there is no supply line hooked up, then the engine drives further into the lot.
Continuity mistake: At the singles club fire, after Roy and Johnny go in to look for the missing man, we see Mike charging the lines, then there's a shot of two of 16's guys walking past the stairway with a hose, and notice that on the stairway we can see Johnny's and Roy's legs heading down the stairs. This same shot is shown again after Roy and Johnny check the men's room upstairs, and once again we see Roy and John coming down the stairs when 16's guys walk past them.
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.