The procedural is seen in more than 200 countries and territories around the globe and has been at the top of the ratings for years.
A few months before NCIS premiered in September 2003, CBS introduced the agency and its main characters via a backdoor pilot in another drama.
So, the show was essentially called Navy Naval Criminal Investigative Service. Why such a redundant name? It was because CBS wasn’t sure their audience knew what the NCIS acronym stood for.