Jesse Spencer

The former Chicago Fire star stunned with some workout-inspired moves!

Chicago Fire fans remember the proposal scene between Brett (Kara Killmer) and Casey (Jesse Spencer) well. But do they remember the ring? 

When the Chicago Fire alum first emerged on the Hollywood scene, he was sporting much longer hair than Matthew Casey. 

NBC Insider spoke with co-executive producer Demetra Diamantopoulos to get the scoop on filming locations.

Find out when new episodes of Chicago Fire return. 

Excuse me? The Chicago Fire actor is from where?!

Revisit the makings of the fan-favorite fire captain played by Chicago Fire's Jesse Spencer.

This is how they make that Brettsey magic happen on Chicago Fire.

The always-optimistic and empathetic Brett is leaving Chicago — but it's for a pretty great reason. 

The Firehouse 51 friends sure knew how to get into trouble during their time in the Windy City.

Firehouse 51's sweetheart tied the knot and launched a new chapter in her life outside Chicago.

Grab the tissues and revisit some of "Brettsey's" cutest moments as a couple on Chicago Fire. 

After 5 seasons of One Chicago bliss, the paramedic and the firefighter are finally husband and wife.

Casey and Severide's latest cigar chat gave Chi-Hards some serious déjà vu. 

"It is just so satisfying to get to see them finally make that commitment to each other," Killmer told NBC Insider.

Love is in the air in Illinois!

Only a couple like Brett and Casey could turn a fish supplies store into a romantic wedding venue.

Brett's character is stepping away from Firehouse 51 to focus on her family. 

Chi-Hards always love a Matt Casey guest appearance — and this time, we hear wedding bells! 

You may need to turn up the A.C., because these stars have been making it hot in here.