Visible crew/equipment: When Roy and Johnny are on the high school roof with the unconscious 15 yr old girl, the outline of the mic transmitter is visible on the back of Johnny's shirt when he kneels down and sets up the Biophone, and the outline of the mic transmitter is also visible on the back of Roy's shirt after he places the label on the isoproterenol.
Visible crew/equipment: When Johnny walks into Rampart and sees the girl whose father has tetanus, he asks her about musical instruments, and when they walk away to get coffee, the outline of the lav mic transmitter is visible on the right side of Johnny's shirt.
Visible crew/equipment: When Roy, Johnny, and Captain Stanley are in the collapsing house trying to rescue the man trapped under it, the outline of the mic transmitter is visible on the back of Roy's shirt when he's leaning over on his knees, as Johnny cuts the carpet. Then the outline of Johnny's mic transmitter is visible on the back of his shirt, when he's below the house.
Visible crew/equipment: When Engine 51 arrives on scene, to join DeSoto and Gage, the guys pull on the pilot to free him from the sailplane, and the outlines of the mic transmitter and cable are visible on the left side of Gage's shirt.
Visible crew/equipment: At the greenhouse nursery, when Larry is leaning over his uncle, who's lying on the ground, the outline of the mic transmitter is visible on the back of the teenager's sweatshirt.
Visible crew/equipment: When the 15 year old OD is in the ER, after Morton removes the squad's resuscitator from the mask and replaces it with an Ambu bag, the cameraman moves forward and leans in, causing a distinct shadow on Johnny and the patient.
Visible crew/equipment: In the waiting room, when Dixie brings the couple with the sick little boy (lead poisoning) to the admitting desk, we can see the small tape mark on the floor behind them, where they had just been standing.
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.