The last few weeks I have been watching on-line third season episodes of Chicago Fire on NBC. It is about the people who work at Chicago's firehouse #51 which includes Ladder 81 (the series centers around all 6 crew members of this vehicle), Rescue Squad 3 (just the leader and maybe one other), Ambulance 61 (both crew members), Battalion 25 (which only contains the chief) and Engine 51 (haven't seen an episode yet where a crew member is featured). The series also shows the lives of these people outside the firehouse.