Rocky Carroll, known for his role as Director Leon Vance on NCIS, has been part of the show for 15 years. Despite the ongoing SAG-AFTRA strikes, Carroll's involvement in the show remains uncertain. He has had an impressive career prior to NCIS, with roles in TV shows like Roc, The West Wing, and Grey's Anatomy, as well as films such as Crimson Tide. Carroll has also directed over 20 episodes of NCIS and made appearances in spin-off series like NCIS: New Orleans and NCIS: Los Angeles. His long-standing presence on NCIS has made him one of the show's longest-serving cast members.