Visible crew/equipment: When Antonio is talking to his CI, you can see the green and red place marking tape on the ground.
The Thing About Heroes - S5-E2
Continuity mistake: The bulletproof vest and pants Officer Ruzek is wearing change colors from dark blue to maroon and back to dark blue. The same for the bulletproof vest worn by Officer Atwater. (00:21:46)
The Thing About Heroes - S5-E2
Other mistake: Officer Burgess kicks in a door with a lock and deadbolt and does no damage to the door frame. (00:46:21)
Other mistake: Kim uses Gabriela Dawson to translate in Spanish to interview a witness. It could be a legal issue to use a native speaker, but it has been established in a few episodes that Kim is fluent in Spanish. (00:06:15)
Factual error: When Detective Olinsky calls out a license plate to Detective Upton he uses the wrong police phonetic alphabet. He uses the word Andy for A instead of "Adam", as is used by Chicago police. (00:35:00)
Answer: Because he is a great cop and gets the job done better than anyone.