Cook's Tour - S1-E4
Continuity mistake: When Squad 51 arrive at the house with the woman in labor, first there is a wideshot of the home and front yard. In the next close-up, the actual style of the house changes - note the roof and its three dormers, and bushes appear/disappear.
Nurse's Wild - S1-E7
Continuity mistake: When Gage rides in the ambulance with the cardiac and gunshot patients, the windows between him and the drivers are opaque glass. In the next exterior shot, as they drive down the street, those interior windows are transparent.
Cook's Tour - S1-E4
Visible crew/equipment: After Roy and John pull up to the house with the woman in labor, when the deputy pulls up behind Squad 51, the reflection of production equipment alongside the lamppost is visible on the car's surface. In the previous long shot of the house, we see there is only a large area of grass in front of the house.
Other mistake: After Roy has found the location of the boy trapped in the collapsed building, Captain Hammer gets on the handy-talkie and says "Engine 51, Stoker," but oddly enough the subtitles read, "Agent 51, Stoker." Subtitles from Universal Studios 2010 DVD.
Continuity mistake: When Peter staggers into the ER because of insulin shock, Dixie walks down the hallway passing treatment rooms 2 and 4, with treatment 2 being beside the nurses' station, and it's the same set-up later when Peter's girlfriend speaks to Dixie in the hallway. However, in prior and subsequent shots of the hallway, it's treatment 4 that's beside the nurses' station.
The Wedsworth-Townsend Act - S1-E1
Other mistake: When Squad 10 is dispatched to the the high-voltage electrocution, Tony opens the bay door, but the closeup we see is actually the same closeup of the hand cupping the switchplate that was shown earlier, when dispatched to the nighttime factory fire.
Visible crew/equipment: When Brackett, Dixie and Early are working on the unconscious little boy, once Brackett says to go with the pacemaker, multiple black T-marks are visible all over the floor - three under the gurney and one near the cart. Another actor's white tape mark is visible under the gurney (partially blocked by the green oxygen tank), where both Early and Dixie stand at different times.
Continuity mistake: After Johnny and Roy bring the injured fireman to the ER, Emma walks up to them in the hallway to ask why they haven't put out the fire yet, and the large handbag hanging from her left arm is suddenly on her right arm when it cuts to the close-up.
Continuity mistake: At the start, Station 51 and Truck 8 are dispatched to the cardiac patient stuck in the elevator, and we even see Truck 8 roll up in front of the building in the overhead exterior shot, but in the hotel it's 127's guys with 51's.
Other mistake: During the burglar's rescue, when Roy uses the K-12 to cut the shaft he stops and hands the K-12 to Johnny, and in the closeup we can see he has made only one vertical cut on one side and to his left the fiberglass material hasn't even been ripped off, but after Cap's close-up, Roy's part of the shaft has been cut away on the left and right sides going all the way around the shaft, which is quite impossible since Johnny had already taken the K-12 from Roy.
Other mistake: While searching for the location of the burglar in the shafts, after John asks for a boost up, we hear one of them say, "Cap," and Cap says, "Oh. Here's a ladder, Johnny," but the subtitles read that Roy says that. (It's worth seeing Johnny drop his helmet on Chet's head.) Soon we hear Johnny say, "Man, he's really stuck..." but subtitles read, "Damn, he's really stuck..." Then later, when John helps carry the cut shaft into the hall, Cap tells him, "Here, I'll take that," but subtitles read that John says that.
Other mistake: At the start of shift, while John's putting the pillowcase on the pillow we hear the dispatcher say, "Boat fire, dock 61," but subtitles read, "Open fire, dock 61." Subtitles from Universal Studios 2010 DVD.
Continuity mistake: When Johnny explains to Roy how he met Cynthia, he says that he "TX'd for Kirk on B shift," and at the end of the episode we see Kirk, who traded shifts with Chet, and Kirk is even played by the same actor who played 110's Kirk, Tom Wheeler's partner in a previous episode Publicity Hound, and also in the next episode, Crash.
Other mistake: When Johnny is complaining about Tom Wheeler while the guys are preparing lunch, Squad 51 is dispatched to a structure fire so Roy and Johnny head out of the kitchen, but Marco turns the stove flame off and the rest of the guys in the engine company leave the kitchen as well, even though they were not dispatched.
Other mistake: After Johnny gets off the phone with Tom Wheeler, and starts complaining about him while the guys are preparing lunch, there are two milk containers on the table which have orange tape covering the brand names.
The Wedsworth-Townsend Act - S1-E1
Continuity mistake: When Brackett and Early walk into the treatment room with the boy whose rabbit is stuck inside a sousaphone, they head into the treatment room opposite the receiving entrance, on the same side as the nurses' station. However, after the rabbit's rescued, when Dixie opens the door so the boy can leave the room we can see it faces the wall and treatment room beside the nurses' station. I would provide treatment room numbers, but the room numbers keep changing in this episode.
The Wedsworth-Townsend Act - S1-E1
Other mistake: At the start, while Station 10 is en route to the fire, there's a closeup of the front of Truck 10 (with aerial ladder) and the large round sticker with the company number 10 imprinted on it can be seen affixed to the rig's surface, even over its two bars of chrome trim. Then at the incident the large sticker with their company number affixed to the front has shrunk significantly, now it's not covering the chrome trim.
The Wedsworth-Townsend Act - S1-E1
Other mistake: On scene at the factory fire, soon after we hear Battalion 14 over the HT saying, "Engine 210... Pump Engine 10's three-and-a-half from the hydrant..." there's a closeup of firemen behind one of 10's engines and we can see part of its license plate with 094, but none of 10's rigs have those numbers on their plates.
Continuity mistake: After being dispatched to "industrial accident at railroad yard," once they rescue the man from the train car carrying trichlorethylene, when Roy and John are standing beside Engine 51 we can see the empty red disc on the side of the engine covering the real engine company number (127), as well as the American flag sticker on the windshield. Earlier, when they were dispatched, there's no disc or sticker in the closeup of Engine 51 (played by Engine 60).
Other mistake: When Roy and John get back to the station and start discussing Cynthia, John takes a milk container out of the fridge which has orange tape covering the brand name.
Answer: It is standard practice to wet down driveways so that they stand out in a long shot.
stiiggy