Currently in its 10th season and as popular as ever, Wednesday night mainstay Chto the OneChicago universe, NBC drama “Chicago Fire” crosses the milestone 200th episode on Oct. 20 (9-10 p.m. ET/PT) with an episode appropriately titled “Two Hundred.”

The cast and crew got together for a recent celebration on set with the cast and crew – including a fun, fire-themed cake, complete with helmet and firehose.

On the October 20 episode entitled “Two Hundred,”

Casey makes a life-altering decision; Gallo, Ritter and Violet agree to an interview and photoshoot; Brett and Mouch launch the paramedicine program while Cruz comes closer to fatherhood.

Check out some photos from tonight’s episode below.