1: NCIS cast members discuss the show's longevity and success over 21 seasons.

2: They share insights on how new characters are seamlessly integrated into the storyline.

3: NCIS creators reveal their formula for keeping the show fresh and engaging.

4: The cast reflects on the evolution of their characters throughout the seasons.

5: Fans' favorite moments and episodes are highlighted by the NCIS cast.

6: Behind-the-scenes secrets are revealed by the NCIS cast members.

7: They discuss the challenges and rewards of working on a long-running show like NCIS.

8: The cast teases what fans can expect in future seasons of NCIS.

9: Don't miss out on exclusive interviews with the NCIS cast members on the show's longevity and new characters.