Take Off From The Season Three Finale - from where Chris is shot

So I'm a bit late to the S.W.A.T party and I'm only half way through watching season two, but I saw a short clip of Street and Chris at the end of season 3, and couldn't get it out of my head. I have no idea what is going on in the season, let alone the episode, but I've used my own take on Chris getting shot in the corridor and what could happen next. Of course it's a Stris story.