Once you’re pulled into Dick Wolf’s “One Chicago” universe, there’s no way out.
It all started with “Chicago Fire,” but spinoffs “Chicago P.D.”
and “Chicago Med” also struck gold with their intricate storylines and even more complex characters.

Of the three, “Chicago Fire” is often hailed as the most realistic.
In oneRedditthread, fans agreed that the fire fighting show does a great job portraying high intensity moments.
This is high praise from the people who do it day in and day out.

Veteran firefighters took to theFirehouseforum to share their skepticism over the SCBA.
Another user surmised that the masks seemed standard, but may have been missing the nose cup.