The NCIS-verse has expanded, and Mark Harmon is still along for the ride. CBS announced in January that a sixth spinoff series of the long-running military-police procedural was on its way, and that the new show,

Mark Harmon, who played the 'NCIS' lead Leroy Jethro Gibbs for 18 years, is returning for an appearance on ‘NCIS: Origins’

While it was previously announced that Harmon would return as older Gibbs to narrate the series, NCIS: Origins co-showrunner David J North has now confirmed that he will also make a brief appearance in the pilot episode.