When Elliot is talking to the cadet on the street and the camera is on Elliot with the cadet's rank in the foreground, the rank is a corporal. When the camera is facing the cadet, his rank is a staff sergeant.
The shoulder insignia of a cadet Elliot questions changes from that of a Private to that of a Staff Sergeant between shots.
This episode is set in August, yet everybody is wearing a coat.
When Tandi is being put into the ambulance at the beginning, you hear her begging her father, but in the couple of seconds you see her being wheeled past, her mouth doesn't move.