Timothy McGee actor Sean Murray reveals how Mark Harmon feels about Leroy Jethro Gibbs' upcoming return on the small screen in NCIS: Origins. Harmon popularized the much-beloved TV character, but after he retired from playing the part, someone else will step into the role as NCIS: Origins recast Gibbs with Austin Stowell. A prequel series, the new expansion show will tackle Gibbs' earliest years with NCIS (formerly NIS). Given this new chapter in Gibbs' story, albeit taking place in the past, there's interest in what Harmon thinks about it.

https://screenrant.com/ncis-origins-show-gibbs-return-mark-harmon-reaction/