Other mistake: Athena goes to her patrol car to turn on the lights so the chopper can see her and the victim, but as she approaches her cruiser, the lights are reflecting on the ground already, even though they weren't activated yet.
9-1-1 (2018)
1 other mistake in season 4
Starring: Angela Bassett, Peter Krause, Aisha Hinds, Oliver Stark
Continuity mistake: When the patient in the ambulance starts to heave, Chimney quickly grabs a barf bag in which the patient vomits. In the following shot, the barf bag is still empty. (00:42:45)