This show is they Greys Anatomy of the police force! Like in GA, newbies in their profession, the characters struggle to gain experience while dealing with personal drama, be it falling for co-workers, dealing with annoying family situations, or their internal struggles.
Unlike other cop shows, and LIKE Greys' Anatomy, the storyline focuses on the characters' lives and being a cop is just one part of a big puzzle. I think the writers are doing a great job developing the characters, and making the storyline believable, and how each episode isn't about just one story line. The charcters' development is pretty well balanced throughout the season. The cast I also think is excellent. Great chemistry on and off screen among the actors! While I wish it was a regular season show, I also think that being a summer series is a big plus, because the show doesn't get lost in the long list of senior prime-time shows that it would have to compete with, even though I do think it can hold its own even if it was a regular season show.
If season 3 is as good as the first two, I do believe this show has the potential to be a long-running series.