Continuity mistake: When Squad 51 and then Engine 51 are dispatched to the hotel fire, before going in Johnny's SCBA cylinder has a large arrow sticker and Roy's has a large red sticker, but once inside Roy's air cylinder goes back and forth from having an arrow sticker to the red sticker. Then in a few moments, when Marco and Chet go in with the stokes, both of their air cylinders are tall, flat-top and devoid of stickers, but inside their SCBA cylinders are short, round-top and keep switching from having either an arrow or large red stickers.
Continuity mistake: During the hotel fire, when Chet and Marco carry the gear-filled Stokes basket to the room where DeSoto and Gage are performing CPR, the drug box (black) and Biophone (orange case) reverse their positions in the Stokes basket between shots.
Continuity mistake: After Squad 51 is dispatched to the hotel fire, when Roy shouts to John that the woman is about to drop the baby from the third floor, Roy's standing across the street beside the squad, but in the next shot he's suddenly standing in front of the hotel, right behind John.
Continuity mistake: When the tones drop for the structure fire at the hotel, the dispatched companies are: Engine 4, Engine 51, Engine 37, Engine 105, Truck 8, and Battalion 14. However, at the fire we see Engine 16, Engine 27, Engine 10, Truck 98, and Battalion 14 instructs Engine 23 and Engine 19 over the HT.
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.