In the opening scene, John hears some rather silly-sounding calls to other stations over the PA system. However, the system actually uses station-specific recognition tones at the start of a call-out just to prevent this sort of overlap. In fact, many other episodes include the playing of multiple recognition tones at the start of a call-out, indicating that several engine companies are being summoned to a major situation.
After man is rescued from the neon sign and goes into ventricular fibrillation, the Datascope shows lead II EKG without the patches in place on the victim.
During the structure fire at Martell Industries, while Roy is getting packed up in his SCBA, you can see the name-tape inside his MSA helmet marked "Kevin", for Kevin Tighe, the actor portraying Roy DeSoto.
Paramedics brought patient down from the ladder and immediately defibrillated, then they verified ekg showed proper rhythm, yet they never hooked the ekg leads to the patient.
A child is brought by his mother to the hospital unconscious after ingesting peach seeds containing cyanide. The child is placed on a stretcher and wheeled into the emergency room, but even though he's unconscious, he moves his arm onto the stretcher as he is being wheeled into the room. He also has his eyes open and is clearly looking around.
Camera shadow on the firefighters as they rescue the man in the chemical plant.
As Johnny crawls into the armored car and says "He's alive", a crew member is visible reflected in the forward window.
At The Beginning Of The Show Station 51 Was Called Out For A Traffic Accident. As They Arrived The Boom Mic Can Be Seen.