Q 01/05
A) Tom Selleck
B) Harrison Ford
C) Dennis Quaid
D) Mark Harmon
Answer · why
Mark Harmon played the lead role of Special Agent Leroy Jethro Gibbs from the show's inception until his departure in Season 19.
Q 02/05
A) Turbo-Boost
B) Caf-Pow!
C) Jolt Juice
D) Nitro-Charge
Answer · why
Caf-Pow! exists only on the show; like Gibbs, Abby runs on caffeine, and hers comes by the giant cup.
Q 03/05
A) David McCallum
B) Alan Dale
C) Rocky Carroll
D) Wilmer Valderrama
Answer · why
David McCallum played Ducky from the 2003 JAG backdoor pilot until his death in September 2023 at 90; Ducky's rambling anecdotes became a running joke...
Q 04/05
A) Never say you're sorry.
B) Always ask permission.
C) Trust everyone once.
D) Always follow the money.
Answer · why
'Never say you're sorry' is Gibbs's Rule 6, completed by 'it's a sign of weakness'; it echoes John Wayne's line as Captain Nathan Brittles in She Wore...
Q 05/05
A) JAG
B) The X-Files
C) Law & Order
D) CSI: Crime Scene Investigation
Answer · why
JAG, the military legal drama, introduced the NCIS characters in two season-eight episodes in April 2003; the spin-off premiered that September.
Play the full NCIS quiz — scored, streaked, and passable to a friend.