9-1-1 is an emergency telephone number. Trained operators respond to emergency and distress calls and send help accordingly for each situation.
- "Pilot": Detective Shane Vendrell mocks Detective Dutch Wagenbach telling him to "call 911 and ask for Det. Blow Me."
- "Our Gang": After Detective Terry Crowley is shot, Detective Vic Mackey calls 9-1-1 and tells the operator about it.
- "Our Gang": Felix Contreras claims he called 9-1-1 after finding Nivan Gonzalez shot.
- "Dawg Days": After a shooting at Chez Club, Officer Danny Sofer yells for anyone to call 9-1-1.