So, with Casey back after finding someone to cover his shifts — everyone’s happy to see him, and there’s even a “Cap” from Gallo when he first walks into 51 — everything’s in place for the wedding to go off without a hitch … right? Of course not. Sure, Severide and Kidd are “meant to be,” as Casey says when nothing how much his best friend has changed, but they run into a major problem at the venue: The other wedding is back on, and the deposit came from that couple. Herrmann (David Eigenberg) tries to pay the other groom to change his date (“they’ve got serious commitment issues,” he says of Stellaride), to no avail.