" I learned that a 211 was a robbery and a 459 was a murder. Code 1 was get there when you can. Code 2 meant get there quickly. (Lights.) Code 3 was get there immediately. (Lights and siren.) Code 7 was grabbing a bite to eat. A 10–100 meant you were on a bathroom break. (A bit of police argot the film business borrowed; it’s part of the lexicon on set.) "

― Bryan Cranston , A Life in Parts