- as Special Agent Leroy Jethro Gibbs
- as Marine Captain Joe Westcott
- as Special Agent Anthony „Tony“ DiNozzo
- as Randall J. Kersey
- as Abigail „Abby“ Sciuto
- as Sam Mathis
- as Dr. Donald „Ducky“ Mallard
- as Doctor Peter Sanger
- as Special Agent Timothy „Tim“ McGee
- as Andrea Aldridge
- as Special Agent Ziva David
- as Marine Sergeant Evan Westcott
- as Director Leon Vance
- as George Westcott
- as Jimmy Palmer
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Watch "NCIS > Shell Shock (Part I)":