Continuity mistake: When Johnny, Roy, and Captain Stanley are rescuing the people trapped inside Olive View Hospital, they are wearing distinctively marked SCBA tanks on their backs, and when all three firemen exit the doorway, Cap is wearing an entirely different tank, and the tanks that Johnny and Roy are wearing have been switched. Then when Johnny jumps off Engine 82, his tank differs again, and when he walks over to the Battalion Chief it's changed yet again.
Continuity mistake: During the rescue of the two boys on the tower, a few shots after Chet starts climbing the stairs, there's a long shot looking up at Roy and John, and we can see Chet at the last set of stairs at the bottom left of the screen, and a few shots later from the same long angle, we see Chet reach the top. However, quite a few shots later, after the old man comments about job security, we see Chet again, but he's nowhere near the top yet.
Continuity mistake: When Johnny and Roy must climb the tower to rescue the two boys, they both buckle the pompier belts around their waists with the large carabiner hooks at their left sides and walk towards the tower, but in the next shot Johnny's belt is on the opposite way, at his right, as they start to climb the stairs. Then the life belt flips back to the way it was originally.
Continuity mistake: When Roy and Johnny are tending to the actor with the possible heart attack, Brackett asks for an EKG strip, so Roy holds out his right hand to give Johnny the cable, but in the next shot Roy's holding out his left hand with the cable.
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.