Continuity mistake: When Johnny and Roy are in the ER after the cave-in rescue, while they're talking to Dixie and Brackett, we can see how long Johnny's hair is. After they get back to the station, when the guys decide to name the dog Henry, there's a closeup of Johnny and now his hair is much shorter and even layered at the sides. Additionally, the dirty areas on his shirt change.
Continuity mistake: After Squad 51 is dispatched to the 'injured man', when Roy and Johnny get out of the squad, Roy is not wearing his watch as they're walking to the victim while getting hounded by the dog, but in the next shot the watch is back on Roy's wrist as the dog chews on his pants.
Continuity mistake: When the patients who were treated at 86's arrive at the ER, Dix has Morton take the asthmatic boy with bronchitis into treatment 1. Then, when Roy is with Early in treatment 4, Early tells Roy to go to treatment 1 to ask Morton if he needs help, and when Roy walks into treatment 1 we can see that it's not really treatment 1, it's actually treatment 4 just playing the part of treatment 1.
Continuity mistake: In the bookmaker's apartment, while Roy. John, Marco and Chet are working on the bookie who's in full cardiac arrest, Vince walks in and speaks to Captain Stanley. Then Vince, who's wearing a watch and ring on his right arm/hand, reaches for all the ringing telephones, and one by one he removes the receivers from the bases, but the right arm/hand in the closeup has no ring or watch.
Continuity mistake: When Roy and Johnny cross the road to talk to the sheriff about the injured rock climbers, Roy does not have gloves in the back pocket of his jeans or anywhere else, nor does he take gloves from the sheriff's trunk with the other climbing gear, before he and Johnny begin their ascent. However, when he reaches the boys, Roy has a pair of thick work gloves sticking out of his back pocket.
Continuity mistake: While John and Roy begin rehearsing in front of Marco and Chet, when John lights the flame his watch reads 10:00, but just a few minutes later when John puts the sawdust into the strainer his watch reads 10:30. When Squad 51 is dispatched to "sick child," timeout is 12:13, and after John and Roy get back to the ER the second time after searching the garage for the poison it's 1:05 at the ER. Then when they're on the Tom Jensen Show, as Roy tries to light the flame John's watch reads 11:30, but when he and Roy are treating the electrical shock victim, his watch reads 4:00.
Continuity mistake: After John heads down to the victims of the cave-in, when they send down the drug box with the HT, the trauma case is still beside Roy, but when Johnny asks for the blankets the trauma case is gone. Then Johnny gives Roy the victims vitals, and when Johnny goes to the vent pipe to get the blankets they just sent down, suddenly the trauma case is down below with him, and it's open, but Johnny never retrieved the case before getting the blankets. Additionally, Roy tells Rampart that the victim has a "large discoloration on the chest", even though John never said anything about it to Roy, when he gave the victim's vitals over the HT.
Continuity mistake: While Roy and Johnny are with the back injury victim, his dog, Thadeus, runs off with the BP cuff, and when Roy chases him and falls into the pool, Roy's now wearing the water-type shoes, note the flat sole. Then when he and Johnny leave, the uniform shoes are back.
Continuity mistake: When Roy and Johnny are on the Coast Guard helicopter, responding to The Boat wreck with injuries off Catalina, there are a few interior shots of them that are flipped, while they're looking out the windows. The paramedic patches are on their left sleeves, but in the flipped shots the paramedic patches are on their right sleeves.
Continuity mistake: While Charlie is finishing up on the squad's engine, Captain Stanley hands Johnny the address in the canyon that has overgrown weeds, and when Johnny packs up the toolbox, Charlie holds out the roll of electrical tape and the combination wrench, with its open-end up. However, in the next shot the only thing Charlie holds out is the wrench, but with its box-end up.
Continuity mistake: At the ferris wheel, when the boy starts to climb down to help the man in the lower seat, in the closeup he steps on the two yellow, fluorescent tube light bulbs causing the bulbs to plummet and shatter on the ground below. The problem is that those two fluorescent bulbs did not even exist in the prior wide shots, that lamp socket space was empty.
Continuity mistake: While Roy and Johnny are studying, after hearing Roy's positive horoscope Johnny tells Chet his birthday is August 28th. However, in the pilot episode "The Wedsworth-Townsend Act," Dixie has a get-together as a combination celebration of John's birthday and gathering of the supporters of the paramedic program. At the party Dixie offers the hors d'oeuvres to Johnny saying, "You first, it's your birthday," as he takes a mouthful of food. During that week we see people wearing coats, and the many deciduous trees (not the evergreens and palms) in LA County have already lost their leaves, which means it's certainly not summertime, August 28th.
Continuity mistake: When Roy and Johnny are rehearsing in front of Captain Stanley and the other guys, after Johnny uses the bug spray on the flame, in the wide shots Roy's hands are in his pockets and the hairspray can is on the table, but in the closeups Roy's still holding the hairspray can.
Continuity mistake: While Roy and John are with the man whose back went out, when Thadeus runs off with the BP cuff and Roy chases him, Roy has the stethoscope around his neck with the chest piece hanging down, but once Roy falls into the pool the chest piece is suddenly tucked down into the front of Roy's shirt.
Continuity mistake: At the start of the episode, we see the squad and engine pull back into the station, and one of the guys - it would be either Marco or Chet, is standing on the engine's tailboard motioning to Mike, who is driving backwards, but in the next shot both Marco and Chet are seated in their jumpseats as Engine 51 comes to a stop.
Continuity mistake: At the structure fire, when Roy and Johnny rescue the man in room 22 by breaking the window, the door to room A is right beside them and we can see the axe mark on the door and the damage to the wall. When Johnny and Roy go back through the window to look for the missing Dr. Bennis, as Johnny uses the K-12, the door to room A now has many more axe marks and the damaged wall is far less damaged.
Continuity mistake: When Morton and Early are examining the guy with stomach pain and cramps, Morton's stethoscope is around his neck with the earpiece at his left and the chestpiece to his right, but in the closeup it's the opposite way around, then it's back to the original way.