Visible crew/equipment: Amid the possible threat of fire from wind shift, when Johnny and Roy rescue the unconscious hiker (John Travolta), the bulging outlines of the mic transmitters are visible on the backs of Johnny's and Roy's shirts, and also the second hiker's shirt.
Visible crew/equipment: When Johnny and Roy are trying to get the boy's head unstuck from the small window opening, the bulging outline of the lav mic transmitter is visible on the back of Johnny's shirt.
Visible crew/equipment: When the guys are rescuing the little boy from the hole in the ground, the outlines of the mic transmitters are visible on the backs of Johnny's and Roy's shirts.
Visible crew/equipment: When Early walks over to the nurses' station after removing the boy's stuck finger from the steering wheel, the two actors' tape marks are visible on the floor, where Brackett stands and where Early is about to stand.
Visible crew/equipment: While en route to the boy who fell in the hole, Mike is driving Engine 51, and seated backwards in the jumpseat behind Mike is Marco, who's wearing a helmet and his turnout, but in the shot from the POV behind Mike, we see the reflection in the rear-view mirror of the grey haired crew member, who is seated facing forward behind Mike.
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.