Joe Minoso

From drinks at Molly's to hectic mayday calls, the friendships forged on Chicago Fire are the soul of the show.

While many One Chicago sweethearts are thriving, these ill-fated relationships have plagued Chi-Hards.

"Everybody is coming in — I'm gonna get the chills — it is such a big ride," Med's Steven Weber told NBC Insider.

Cruz has been fighting for his life and his livelihood on Season 13 of Chicago Fire.

Chicago Fire Season 13 has centered around the firefighters facing their ghosts. And for Cruz, that's Flaco. 

Miñoso told NBC Insider, "This has been probably Cruz's most controversial storyline..."

In the Season 13 fall finale, Cruz's past came back to haunt him.

Gianna Mackey was a Season 9 charmer and a certified scene-stealer as the Firehouse 51 paramedic.

Severide's recent family reunion has created a bit of a stir at Firehouse 51. 

The Windy City is a safer place when the Firehouse 51 firefighters are on a call. 

The One Chicago star lit up the stage. 

Find out what your favorite actors look like with (and without) their fire-safe apparel.

Love is in the air in Illinois!

Say it ain't so, Joe! The Firehouse 51 fan favorite recently reflected on his future in the CFD.

Severide was recruited for another arson case — but it will pull him away from 51. Yet again.

Here's what Firehouse 51 looked like at the very beginning. 

Tim Hopper delivered a compelling performance as Chicago Fire's arson investigator.

Crossovers don't just happen on screen when it comes to Chicago Fire, Chicago Med, and Chicago P.D.

From Dawsey to Upstead, here's proof that business and pleasure can mix in the One Chicago universe. 

Brian "Otis" Zvonecek was a key part of Firehouse 51 for 8 seasons.