as Jimmy Palmer , making one of his earliest appearances as Ducky's new assistant. Sam Witwer as Staff Sgt. Rafael. Where to Watch
: While it initially looks like an accident, Ducky determines the Marine was killed by a shoulder-launched assault weapon before being placed on the stump. Watch NCIS S01E (21)
: Gibbs and Tony go undercover to infiltrate a local militia and track down stolen military weapons being sold on the black market. as Jimmy Palmer , making one of his
In , titled " Split Decision ," the team investigates the grisly discovery of a Marine's body impaled on a tree stump, which leads them into a dangerous world of illegal weapon smuggling. This episode originally aired on May 11, 2004 . Episode Highlights as Jimmy Palmer