It’s hard to picture anyone other than Mark Harmon playing the role of Special Agent Leroy Jethro Gibbs on NCIS, but several other very talented actors almost landed the role!

The 73-year-old actor played the iconic character on the JAG spinoff series for 19 seasons, becoming the second to last original series regular to depart the show.

In a recent feature from The Hollywood Reporter on the long-running and hit CBS drama series, creators Donald P. Bellisario and Don McGill, as well as several executives revealed that there were other names before Mark‘s who were mentioned for the part.

Find out who will be playing Gibbs in an upcoming NCIS: Origins prequel series!

Head inside to see the 11 major stars who were once considered for the role of Gibbs on NCIS…