There are plenty of posts about this shot, and what it means for Chimney’s upcoming brush with death in the finale! Firstly, you’ve got the crack in the floor separating him from everybody else, but also, separating the fire truck from the ambulance!
Now, from what we’ve seen the ambulance is on top of the bridge when it collapses! I am believe we are unclear on the fire truck’s location but we do know it is involved, since we have bts pictures of it covered in dust! Plus, we know the 118 have various injuries, with Chimney’s being the worst.
Anyway, the point of this post is the accompanying shot from the scene above, which is Bobby standing above the rest of the team.
This video, shows Bobby sliding down (or falling) to get to the ambulance, I assume to help rescue Chimney!
So, I believe this scene is telling us what groups they’ll be in when this accident happens! Eddie, Ravi and Buck, as one unit! Bobby, on his own, given the chance to save his family! And then there’s Chimney and Hen. Did you notice she wasn’t in this scene? She could have easily been with Buck and Eddie to greet Ravi, or stepped over from the ambulance, but she didn’t! That’s because she’ll either be in the ambulance with Chimney or on her own, when the bridge collapses.