Jason finally feels like he's found the firehouse where he belongs - 81 is home. None of his other firehouses ever felt like the right fit. For the very first time since the suspension that's followed him for years and made his career go off the rails, Jason is able to relax and settle in.
Starting off on the wrong foot with some of his new co-workers didn't help, but they're working it out and getting to know one another now. It's a relief in so many ways.
The fact that he's still here after the suspension revelation is surreal because he expected to be gone in one way or another after that, just like every other time he's refused to talk about it. A huge weight has been lifted off his shoulders now that somebody knows the truth (and didn't judge him for it on top of that).
He considered leaving Chicago at one point but ultimately decided against moving because he was born and raised here. Plus, he refuses to let the assholes win and drive him away (sue him, he might run on spite a little bit. He's human, after all).
Jason hopes to make this job permanent.