Continuity mistake: When DeSoto joins Gage at the kitchen table they discuss Gage's bright idea of rodeos. In all the shots facing DeSoto his hands are clasped together with the coffee cup on the table, but in all the shots facing his partner, he's holding the cup of coffee. The magazine ends up under DeSoto's arms between shots as well.
Continuity mistake: After treating the girl who had a soda pop bottle explode in her face, when John and Roy are carrying the stretcher out the door, they're facing the stretcher and each other in the interior shot, but in the exterior shot John has turned around, with his back facing Roy while carrying the stretcher.
Continuity mistake: While the children from the bus accident are being lowered on 43's snorkel, Roy and Johnny are in the bus with the nun. Then even though quite some time has passed, by the time Roy and John are ready to free her from the wreck, it cuts to the shot of the same children still being lowered on the snorkel.
Continuity mistake: After Sister Barbara is brought to the ER, when Dixie tells Roy to get coffee with her, Dixie has long nails with light colored polish as usual, but when it cuts to the closeup of Dixie's hands getting coffee from the urn, the long nails are unpolished.
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.