NCIS S1

NCIS Season 1 introduces Leroy Jethro Gibbs' Naval Criminal Investigative Service team, focusing on their unique dynamics as they solve crimes involving Navy and Marine Corps personnel, kicking off with the murder of a Navy Commander on Air Force One, and featuring cases like a marine's staged death during a parachute jump, leading to the permanent addition of Secret Service Agent Caitlin Todd to the team as they establish their distinctive blend of procedural drama, character humor, and developing relationships.