“What I was most concerned about, when they were casting, was finding actors that could capture the internal world of the character, as opposed to exactly matching the description that I wrote. In that sense, I think it’s been really amazing. When I was watching them act, I was like, ‘Yes, this is it! This is the person! You did such a good job!’” - Veronica Roth
In this picture you can see Shailene (but possibly her stunt double) jumping off a platform and onto a roof. This is probably the scene where Tris jumps off the train right when initiation starts. And I’m guessing that the girl beside her is Christina.