Beware the Nice Ones: Make no mistake, this guy may be a nice guy to a fault and fairly bumbling, but piss him off and he will find a way to end you.Amicable Exes: Although his marriage to Sarah ended badly, they were able to work things out so that they agreed to remain together until Henry left for college (after which they amicably divorced) and have since remained friends.With Nolan being played by Nathan Fillion, it's pretty much impossible to not read this as an allusion to Castle where Fillion plays a famous mystery novelist. Actor Allusion: When Nolan meets FBI agent Jessica Russo, who's written a book he has read, he giddily asks her for an autograph because ' never met anyone who's written a book before'.He started work in construction after dropping out of college when his old girlfriend (now divorced wife) became pregnant.

Prior to moving to LA, he owned a successful construction company that he gave up to start anew as an officer. He's proven to be the most affable and bumbling of the rookies (and, of course, the force in general), but also effective due to his life experiences and deep empathy. That is until he became a heroic bystander in the midst of a Pennsylvania bank robbery, consequently dropping everything to become a police officer. The oldest rookie at the Los Angeles Police Department Wilshire Division, John is an ex-construction worker who has a midlife crisis following a divorce and his son moving away for college.

The rookie brave heart cast doctor