Visible crew/equipment: When the dispatcher drops tones for the trapped victim of a traffic accident, just after we hear Captain Stanley say, "KMG365," we can see movement between the front passenger and driver seats of Engine 51, precisely where the camera is. Captain Stanley is still at the radio base station and Mike hasn't opened the door yet.
Visible crew/equipment: When the woman staggers into the ER a nurse rushes over, and the actor's T-mark is visible on the floor in front of the admitting desk, where the nurse was just standing.
Visible crew/equipment: After Station 51 is dispatched to the fire at the refinery, when they reach the refinery and make a right turn the view is from atop Squad 51's roof, and the reflection of the covered camera and part of the cameraman's head are visible in the squad's lightbar.
Visible crew/equipment: After Squad 51 is dispatched to the 'heart attack' at Compu-Data, when Johnny and Roy walk in and then approach the victim in the office, the reflection of the moving camera dolly is visible on the office's large panes of glass. The camera equipment also casts a shadow on the three men as they walk toward the office, then on the glass as it moves back and forth.
Visible crew/equipment: When Johnny and Roy are leaning on the old fire engine talking about how it's not just some old car, and then when Johnny bends over and lays the mechanic's creeper on the ground, the outlines of the mic transmitter and wire are visible on the back of Johnny's shirt.
School Days - S2-E14
Visible crew/equipment: While Dixie, Roy, and Billy are walking away from the nurses' station down the hallway, the outlines of the mic transmitters and wires are visible on the back, center of Dixie's uniform, and the back, right sides of Roy's and Billy's shirts.
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.
Family Ties - S6-E16
Visible crew/equipment: After both siblings are carried out of the burning house, when Roy kneels down beside the boy and leans forward to set down the drug box, the bulging outline of Roy's mic transmitter is visible (till the end of the scene) at the front, left side of his shirt, and note that the actor even touches it, possibly to make sure it didn't move out of place.
Visible crew/equipment: At the refinery fire, after Roy gets into the ambulance with the patient Johnny shuts the back doors, and when the ambulance backs up the reflection of a crew member with paperwork (script?) is visible in the left ambulance window.
Welcome to Santa Rosa County - S6-E10
Visible crew/equipment: After Johnny rappels down alone, so he can inform the sheriff of the situation with the injured climbers, when he talks to the sheriff beside the squad car, the reflections of the camera/dolly/crane are visible on the chrome corner of the sheriff's car.
Visible crew/equipment: After they finally get an address for the attempted suicide Squad 51 takes off, and when Engine 51 pulls away from the curb, the shadow of cinematographic equipment is visible on the engine's front, and the reflection of lighting equipment is visible on the side of the engine.
Visible crew/equipment: When Roy and Johnny are with the teenage girl who OD'd, Roy walks over to the bystanders, and when he speaks to the mother and daughter, the perpendicular actors' marks are visible on the ground where they stand.
Visible crew/equipment: At the skating rink, when the guys start walking on the ice and go to the two clowns, the outlines of the mic transmitters and wires are visible on Johnny's shirt, as well as on the back of the blonde skater's green outfit. Then, when the ambulance attendants are walking on the ice, the outline of the lead attendant's mic transmitter is visible on the front of his shirt.
Visible crew/equipment: When Engine 51 arrives at the scrap yard fire, just before Captain Stanley opens his door and steps out in the closeup, the reflection of a crew member/cameraman, wearing a white, short-sleeved shirt is visible on the engine's red surface.
Visible crew/equipment: After Captain Stanley and Roy get the trucker out of the wrecked cab, when Stanley takes his pulse, the outlines of the lav mic transmitter and wire is visible on the back of his shirt.
Visible crew/equipment: After spending all night on the job, when the tired guys of 51 are at the basketball game, the outlines of the mic transmitters and wires are visible on the backs and sides of 51's jerseys, particularly when Roy gets injured. (00:36:00)
Visible crew/equipment: After Johnny cuts the cable holding Lorenzo's locker, when Johnny climbs down the outlines of the mic transmitter and wire are visible on the back of his shirt.
Visible crew/equipment: When Roy and Johnny are with Vic (Adam West) trying to outrun the bear, the outlines of the Lav mic transmitter and its cable are visible on the back of Johnny's shirt.
Visible crew/equipment: When Johnny and Roy aid the woman who is stuck in the small opening of the dog door, the bulging outlines of the mic transmitter and wire are visible on the back left side of Johnny's shirt.
Visible crew/equipment: When Johnny asks Dixie for advise on how to talk to fifth graders, Dixie walks out from behind the desk at the nurses' station, and as they walk up the hallway the actor's tape mark is visible on the floor, where she had been standing and where Morton is about to stand.
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.