I don't know this will be helpful or not but what I felt while watching this was that even though the name was first responders, the show was more of collab between police and fire fighters and medics. I also get why because they were always the 1st people to reach the scene and investigate but from the posters I thought it would focus more on the medics and fire fighters rather than the police.

The story was okaish, there is a main villain, okay development of the story and everything revolves around the male protagonist and Buldozer(forgot his name).
Acting was okay and i think it is one time watch
Though most of it was spent in building the story so much that I don't think the climax or the ending was that appropriate. It was an okay ending.
Not trying to spoil everyone just my thoughts.