When a Chief Petty Officer with top-secret clearance to a Naval research laboratory is murdered, the investigation leads the NCIS team to an international arms dealer. Meanwhile, a probationary agent tries to impress Gibbs hoping to join his team.
As Grissom and Sara close in on who framed Hodges, the CSI team investigates a lock room murder mystery at 30,000 feet, when a cargo plane lands autonomously at McCarran Airport and everyone on board has been killed.