Chimera

Gibbs' team is sent to investigate a death aboard USNS Chimera, a top-secret naval research ship sailing in the middle of the ocean. After boarding the ship, they find it abandoned except for a dead U.S. Navy scientist, who died from viral hemorrhagic fever. However, they suspect that they are not alone. Their investigation is further complicated by the Navy's reluctance to share information regarding the research which took place on Chimera. However, they quickly discover that the Chimera is not a research ship, but is in fact transporting a salvaged Russian nuclear warhead. A mole in the crew staged a viral outbreak to get the crew to abandon ship in preparation for the Russian strike team. The team sabotages the Chimera and steals the Russian strike team's boat, taking the warhead with them. As the team leaves, Navy jets destroy the Chimera to cover up any evidence of Navy involvement.