The actor says the young Gibbs-led prequel provides a "more raw look at these characters" and "gets much more personal" than the original "NCIS."

NCIS: Origins isn't just exploring Gibbs when he was younger — the prequel also features Mark Harmon reprising his role as the present-day version of the character. During a panel discussion with reporters on Thursday,

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 once shared what it might take for him to return to the ‘NCIS’ franchise after his very peaceful exit.