NCIS: Origins is part of the NCIS universe that focuses on the Naval Criminal Investigative Service (NCIS), so it can be confusing that Gibbs works for an organization called NIS in the prequel series. Leroy Jethro Gibbs (Austin Stowell) and Mike Franks (Kyle Schmid) are reviving the iconic NCIS characters for the prequel story, which begins in 1991. Technically, Gibbs and Franks still work for NIS, but it is an extension of the federal NCIS agency after an earlier structuring of the current organization.
