Welcome to Santa Rosa County - S6-E10
Revealing mistake: After rescuing the burn victim from The Boat's explosion, Johnny and Roy are at the back of the camper with the victim, while the victim's wife drives the camper to the clinic, but when they arrive at the clinic the camper hasn't even stopped yet, and we can see the woman's legs at the side of the camper, waiting for her cue to come rushing to the camper's rear door when her husband is brought out.
Welcome to Santa Rosa County - S6-E10
Revealing mistake: While in Santa Rosa County, after Roy and John rescue the two injured rock climbers, and also later after they rescue the burn victim from the lake, the Richards ambulance that transports the patients has license plate number "Z125631" which is pretty funny. That plate number should look familiar, as it's the same plate number on the ambulance in LA County, seen in many episodes such as "Rules of Order", "Unlikely Heirs", and "Not Available."
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.