Continuity mistake: When John shows Chet the card with the address that Daisy gave him, Chet quickly takes John's pen to write the address, and when John grabs his pen back he quickly and unsuccessfully tries to put the pen back in his shirt pocket, but in the next shot the pen's in his pocket.
Continuity mistake: When John and Roy are with the little boy in respiratory arrest, while John uses the Ambu bag his watch reads 12:15, then he informs Rampart that they have O2 on the boy and goes back to the Ambu bag, and now his watch reads 12:25, though it's only been a minute.
Continuity mistake: While Roy, Johnny, and Cap are in the ice house with the hypothermic victim, there's a closeup of the pipe's frozen shut-off valve in the upright position with an ammonia leak, and the manifold temp/pressure gauges that are hanging from it. Then, when Johnny goes to wrap the rag around the valve it's upside-down, but in the next shot the valve is upright once again, and the manifold gauges are now facing the opposite way.
Visible crew/equipment: While en route to the accident, just as we hear the dispatcher inform Engine 51 that the fire is out, in the exterior shot of Squad 51 there's black tape covering much of the lightbar's chrome atop the cab, which vanishes when they roll up on the accident scene.
Revealing mistake: When Roy's in the ambulance with the man who was rescued from under The Boat, he's on the Biophone with Rampart, and just after Roy says, "So we've occluded the arterial flow in the right arm," in the next shot from inside the ambulance, we can see that they pass a couple of parked GlamourTrams. The ambulance drives around Universal's lot while shooting the footage inside the moving ambulance, en route to Rampart.
Visible crew/equipment: When Brackett walks into the adjoining treatment room to talk to Pete about his pregnant wife, and tells him to sit, the legs (wearing jeans) of the cameraman/crew member are reflected on the chrome of the gurney, as he walks forward when the camera dollies in for a closeup.
Visible crew/equipment: At the home of the pregnant woman who was shot, the only ones there with Dora are Pete, Roy, Johnny and Vince. When the two ambulance attendants bring in the stretcher, a crew member's entire right arm (wearing short, white sleeve with pinstripes) comes into view on the right side of the screen, as the camera pans back.
Continuity mistake: After Johnny and the attendants exit the ambulance with Dora, the pregnant woman, the ambulance is empty and the drug box is on the seat with the Biophone on the floor beside the seat, but in the next shot as the gurney is wheeled inside, the drug box is now on the floor between the Biophone and seat.
Continuity mistake: Before the fake eye test begins Captain Stanley hands each guy their own cheat sheet, and when Chet walks out of the day room upset about the eye test, John puts his cheat sheet into his shirt pocket just as they're being dispatched to the "accident and car fire." After the rescue, when John and Roy get back to the station John joins Chet by the lockers, and when John tries to prove that the eye test was a prank, John opens his locker and pulls out his cheat sheet, even though we saw him place it in his shirt pocket before the run.
Continuity mistake: When Dixie goes to the waiting room to get Pete Barlowe so she can bring him to see Brackett, we see Carol, the nurse with black hair, working behind the admitting desk, but in the next shot Carol is in the treatment room with Brackett and Pete's wife.
Revealing mistake: When John is in the moving ambulance with the pregnant gunshot victim, Brackett asks him if he hears fetal heart tones, and when John removes the stethoscope from his ears he leans back and we can see out the window that the ambulance is quite stationery, despite the siren.