Continuity mistake: When Brackett leads Mr. Teal to his wife they walk into treatment 2, which has a windowless door, but in the shot from inside the room they're actually in treatment 1, which has a window on its door.
Continuity mistake: After winning the semi-finals against 16, when Chet walks into the kitchen in the closeups John's holding the newspaper filled with photos on the page facing out, but in the wideshots an entirely different page faces out. (00:45:00)
School Days - S2-E14
Continuity mistake: When Dr. Temple's assistant is running to the door to let the ambulance attendants in, as we see her exiting the room where the bookcase has fallen over, her slip is showing, but the very next room we see, her slip is properly under her dress.
Continuity mistake: Immediately before the man rescued from the sewer fire is brought into the hospital, the shot shows squad 51 and two ambulances in all three spots in the ambulance bay, however neither ambulance is the big box Mayfair type that was at the rescue scene. (00:11:20)
Continuity mistake: When the squad rolls up on the OD victim's residence Roy drives the squad over the little fence and bends it. When he takes off the gate is back in its original position.
Loose Ends - S6-E12
Continuity mistake: At the freight yard when the two men are talking to each other after the Montana man says that the operator has been a good friend, the front of the boxcar is seen, and some fire vehicles (a battalion car and a deluge) are visible on the left of the screen. When Engine & Squad 51 come on the scene, those fire vehicles have disappeared. (00:33:55 - 00:36:05)
Propinquity - S3-E20
Continuity mistake: In the opening rescue where Roy and Johnny rescue the woman from the burning car, Johnny is relaying the woman's vitals to Rampart. Over his right shoulder, you can see a sticker on the trunk of the car behind them. This is probably a dealer sticker. In one scene, it is blue and red, and in another, it is blacked out. It returns to blue and red, only to be blacked out again.
Welcome to Santa Rosa County - S6-E10
Continuity mistake: In the scenes where Johnny and Roy are transporting the injured hikers in the back of the pickup truck, Roy's watch appears, disappears, then appears again.
Continuity mistake: When Johnny and Roy rappel down the cliff with the downed hang gliders, both of their lifebelts are buckled going from their left to right sides, but in Johnny's first closeups when he's with the second victim, Johnny's lifebelt is on the opposite way, note that it's buckled going from his right to left. Then once the glider falls Johnny's belt is on the original way.
Peace Pipe - S2-E5
Continuity mistake: When Engine 51 rolls up to the house with the fire in the toilet and then also at the hydrant that Roy and Johnny lock off, Engine 51's license plate reads 110856 (different engine). However, right after Chet proposes a treaty, when Station 51 is dispatched to the "construction accident," just as the front bay door opens in the shot from inside the apparatus bay, Engine 51's plate reads 180174.
Continuity mistake: After Roy frees the woman's fingers from the mixer, they use the yellow dish towel and she tosses it into the sink, but in the next shot when Johnny suggests serving Mai Tais, the yellow towel is suddenly back in her hands and the white towel is now over Johnny's shoulders.
Peace Pipe - S2-E5
Continuity mistake: When the drunk driver arrives in the ER and is taken into treatment 5, Vince is with the intoxicated man, but at the accident scene while they're still trying to get the little girl out of the car, after Roy checks Debbie's pupillary response, in the closeup of Debbie's mother Vince is still standing right beside her. Neat trick for Vince to be in two places at the same time.
Continuity mistake: After the explosion at Rampart's lab, Brackett and Dixie head out receiving with two gurneys carrying emergency necessities, Dixie's gurney has light blue trim and Brackett's gurney has a double rod trim at the top, but outside Dixie's blue trim gurney has vanished, hers now has double rods and Brackett's has single rod trim.
The Promise - S3-E11
Continuity mistake: When Johnny and Roy get back to the station and talk to Paula in the rec room, in the wide shot Johnny has his hands on his hips and then subtly moves his elbow behind Roy, but it cuts to a close-up and his elbow is still blocking Roy.
How Green Was My Thumb? - S3-E17
Continuity mistake: In the first shot as the engine and squad roll up to the winery fire, the entire trailer with the wood barrels is engulfed in flames with huge plumes of black smoke, but when it cuts to the next shot the trailer and barrels are fine, and there's only a very small fire burning on the ground while Marco pulls the hose off the engine, before the explosion.
Continuity mistake: While Roy and Johnny are working on the guy who fell from the horse, since Roy's hands are busy he has the IV line dangling from his mouth before setting up the patient's IV, and in wide shots the cannula is dangling at the left side of his mouth, but in closeups the IV line and cannula have switched sides.
Continuity mistake: When Old Bill is wheeled into treatment 3, there's a pillow under his head and the gurney he's lying on has grey trim, horizontal bars under the bed and flat steel plates over the wheels, but when it cuts to inside treatment 3 as he's brought in, the pillow has vanished and the entire style of the gurney he's lying on is completely different.
Continuity mistake: When Station 51 is dispatched to the 'stove fire' it's nighttime, but when they roll up to the apartment complex it's still daylight.
Continuity mistake: When Roy and Johnny begin rappelling down the cliff to the injured hang gliders, Roy's not wearing the safety pack in the closeup, but as they're rappelling in the wide shot the large safety pack is suddenly on Roy's back.
Continuity mistake: On the roof at the studio, Wally sets up John's gear and anchors his rappelling line onto a single carabiner which is attached directly to the belt support around John's waist. Yet when Johnny flips upside down while rappelling down, in the closeups when Roy joins him, that carabiner is now locked off onto another carabiner, which is attached to John's belt, and both of their locking mechanisms are red. Then when John's on the ground, the carabiner attached to his belt and anchor is entirely silver.
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.