On the rescue at the fraternity, Dr Morton orders Johnny and Roy to keep the patient on oxygen. But as they put the patient on the gurney, the patient has the face mask on but is not hooked up to the oxygen tank. In fact, Roy is shown taking the tank back to the squad.
When Johnny and Roy were standing next to the vehicles, they are to the right of the driveway, and the top to the convertible was down. When they leave on the rescue a moment later, the cars are now parked along the back wall, and the top to the convertible is up.
When the underside of the El Camino on the drawbridge is viewed from the fire boat, it is obvious that the car has no engine.
During the first rescue, Johnny says that the choking victim had stopped breathing, but as the scene fades to black for the title sequence, it is obvious he is breathing.
When rescuing the man in the car Desoto reports to the hospital that the injured leg has already been immobilized, Dr. Early responds saying "Immobilize the injury and transport. "