Character mistake: The firefighters state that the acronym for CPR is ABC for Airway, Breathing, Circulation. This is very outdated as in 2010 the American Heart Association changed the recommendation to CAB for Compressions, Airway, Breathing following evidence that compressions first in CPR saves more lives.
Trivia: There is no Station 19 in Seattle. The actual Seattle Fire House in Station 19, stationed in building at 2800 in Seattle, is Station 20 in Queen Anne.