Honestly, forget Mark Harmon’s return to the flagship for NCIS for season 22. The franchise has a more compelling opportunity to return the original Leroy Jethro Gibbs, and it had better take it. Harmon’s central NCIS character established the franchise, with the actor staying on board for nearly 20 years. Ultimately, Mark Harmon exited NCIS in season 19, but fans still miss his brash, charming presence. Although Harmon returned in NCIS: Origins to help kick off and tell the story of the agent’s background at NIS, the Freaky Friday actor’s role left me feeling like Gibbs hadn’t actually returned.

https://screenrant.com/ncis-tony-ziva-spinoff-mark-harmon-gibbs-return-op-ed/