Continuity mistake: When the ambulance carrying the 15 year old OD backs up to ER receiving, both attendants get out of the driver and passenger sides, but in the previous and following shot we see that one of the attendants has been sitting with Johnny and the patient, at the back of the ambulance.
Continuity mistake: When the 15 year old OD is wheeled into the treatment room and transferred onto the gurney, Roy leans over and starts removing the squad's resuscitator from the airway's mask, but then it cuts to a closeup of Morton's hands removing it.
Answer: It is standard practice to wet down driveways so that they stand out in a long shot.
stiiggy