This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (WTAJ) — Have you ever heard someone, ...

(WTAJ) — Have you ever heard someone, possibly a police officer, respond by saying “10-4?” What does that mean and where did it come from? Meaning acknowledgment or okay, “10-4” comes from the 10 ...