Continuity mistake: When Station 51 is dispatched to the 'unconscious female in a car' it's 8:20, but when Roy is on the Biophone with Rampart his watch reads 11:05, and John's watch reads 12:30 as he's checking the woman.
Continuity mistake: On the roof at the studio, Wally sets up John's gear and anchors his rappelling line onto a single carabiner which is attached directly to the belt support around John's waist. Yet when Johnny flips upside down while rappelling down, in the closeups when Roy joins him, that carabiner is now locked off onto another carabiner, which is attached to John's belt, and both of their locking mechanisms are red. Then when John's on the ground, the carabiner attached to his belt and anchor is entirely silver.
Continuity mistake: When Roy and John are at the studio so John can test out Wally's rappelling gear, on the roof John's wearing his medical holster, but Roy is not, but when each rappel down in the wide shots they're both wearing it. Then in their closeups while hanging on their lines, Roy's wearing his medical holster, but Johnny's has vanished, then on the ground Johnny's wearing his and Roy's has vanished.
Continuity mistake: At the studio, when Roy and Johnny are on the roof with Wally to test out Wally's rappelling gear, before Johnny rappels down the thin swami around Johnny's waist and the loop at the back are both green, but once he rappels down the swami belt is grey and the loop is blue.
Continuity mistake: When John and Roy rappel down together after John's rope kinked up, as they reach the bottom Roy and John remove their helmets, but as Wally rappels down both paramedics still have their helmets on in the overhead shot.
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.