Visible crew/equipment: When all the guys are on the roof trying to rescue the unconscious man on the scaffold, the outlines of the lav mic transmitters are visible on the backs of Johnny's and Captain Stanley's shirts, as well as the back of the other scaffold worker's shirt.
Visible crew/equipment: When Johnny and Roy are trying to get the boy with Meniere's Syndrome out of the treehouse, the bulging outlines of the mic transmitters are visible on the backs of Deputy Pauling's, Roy's, and Johnny's shirts.
Visible crew/equipment: When Morton is talking with the fireman's widow, DeSoto tells Morton that Early wants to see him, and when Morton walks through the door DeSoto's foot moves, and we see the actor's black tape mark on the floor by his foot.
Visible crew/equipment: After Brackett tells Jenny that they may have to put Koki down, Dixie walks into Jenny's isolation room, saying that they have the latest lab report, and the actor's tape mark is visible on the floor at Dixie's feet.
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.