Propinquity - S3-E20
Continuity mistake: After they load the woman from the wrecked car into the ambulance, Roy and an ambulance attendant are riding in the back with her. In the shots of the moving ambulance, until it's involved in the traffic accident, we should be able to see Roy and the attendant through the windows, but they're simply not there.
Propinquity - S3-E20
Continuity mistake: When the victims are loaded onto the second ambulance with Roy, after the original ambulance was hit by the car, we can see the license plate, Z99977, as Johnny closes the back doors. Then while en route to Rampart, the ambulance's make/model changes with plate, Z99953, then the make/model changes yet again, but still has the same plate, Z99953.
Continuity mistake: While the judge and young lawyer are doing CPR to help, Roy's tearing off strips of tape and placing them on his pants (for IV as usual), then after he asks Johnny, "Were you able to get in touch with Rampart?," in the next shot all those strips of tape have vanished from his pant leg, only to reappear when Roy defibs the patient.
Continuity mistake: In the courtroom, when the patient goes into V-fib, in the two wide shots while Roy is defibbing the patient, John's holding a tube of conductive gel (for the paddle electrodes), but in John's closeup when he says, "Hit him again," John's hands are empty.
Continuity mistake: When Johnny and Roy walk into the courtroom, Johnny places the drug box on the table with its back facing out, but in the closeups of Johnny and the young lawyer, the drug box is turned the opposite way, with its front facing out.
Continuity mistake: When Roy and Johnny walk into the courtroom, Johnny and the young lawyer kneel down beside the patient's right side, but in the patient's closeup Johnny's kneeling on the opposite side of the resuscitator, near the patient's head, where Johnny will walk to a few shots later, when that young lawyer will once again walk over and kneel down.
Continuity mistake: When Deke comes into the ER with the two burned firemen and speaks to John and Roy, the window behind them is on the same side as the ER's receiving entrance. Notice that outside the window there's one of those blue metal shades at the top, which does not exist in the exterior shots of that side of the ER.
Continuity mistake: When Roy and Johnny get back to the brush fire's base camp, they join the rest of 51's guys who are sitting and eating. During this entire scene, continuity between shots is off. Chet's coffee keeps switching from Johnny's hand to being on the ground, and then between both of Chet's hands to being on the ground. Also, the bread on Chet's sandwich is either white or a darker type, the sandwich size varies, and it also changes hands.
Continuity mistake: When Dixie has her hand caught in the coffee dispensing machine, Roy gets it free, and when she pulls her hand out all of her nails on that hand are very short in the closeup, but in following shots her nails are quite long, as usual.
Inventions - S3-E22
Continuity mistake: When Early and Morton are talking to the cab driver, in the overhead shot there's a hat on the desk, but in the shots facing Early the hat vanishes and other things on the desk rearrange themselves.
Inventions - S3-E22
Continuity mistake: When Chet's wearing his suction cup shoes, John uses the hose to wet the area around Chet's shoes, and then places the hose down on the ground, but in the shot from inside the van John's still holding that hose.
Inventions - S3-E22
Continuity mistake: When Station 51 is on site at the major chemical leak, Roy and Johnny are wearing SCBA tanks that have distinctive markings/stickers, and their tanks change while they search, locate and rescue the worker.
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.