| Mark Harmon | Leroy Jethro Gibbs |
| Sean Murray | Timothy McGee |
| Wilmer Valderrama | Nick Torres |
| Emily Wickersham | Ellie Bishop |
| Maria Bello | Jack Sloane |
| Brian Dietzen | Jimmy Palmer |
| Diona Reasonover | Kasie Hines |
| Rocky Carroll | Leon Vance |
| David McCallum | Donald Mallard |
| Matthew Bellows | Navy Captain Reginald Barkley |
| Arlene Santana | Constance Shaw |
| Megan Gallagher | Under Secretary of the Navy Jennifer Leo |
| Tommy Walker | PO 1st Class Justin Hardy |
| Michele Boyd | Chief Petty Officer Emily Ross |
| Ransford Doherty | Petty Officer Second Class Zachary Harper |
| Tracy Howe | Culinary Specialist Brian Kale |
| James Ferris | Lieutenant Commander Gregory Pullman |
| Ethan Flower | Fire Chief Alfonso Romero |
| Josh Trant | Chief of the Watch |
| Mark Fite | Walter Miller |
| Mylan Janoplis | Master Chief P.O. Todd Orlando |