Screenshots:
 
https://extraimage.net/image/jIjy

IMDB: http://www.imdb.com/title/tt2261391/

As the firefighters, rescue squad and paramedics of Chicago Firehouse 51 forge headfirst into danger, the choices they make can mean the difference between life and death. But from the relentless pressure of saving lives, an extended family is forged. Led by Chief Wallace Boden, Matthew Casey, Kelly Severide, Gabriela Dawson and the others know -- when it's go time, Firehouse 51 lays it all on the line for each other. This high-octane drama from Executive Producer Dick Wolf offers an edge-of-your-seat view into the lives of everyday heroes committed to one of America's noblest professions.

First episode date: 10 October 2012
Network: NBC
No. of episodes: 120 (list of episodes)
Spin-offs: Chicago P.D., Chicago Med, Chicago Justice